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  98. <li><a class="reference internal" href="#"><code class="xref py py-mod docutils literal notranslate"><span class="pre">winreg</span></code> — Windows registry access</a><ul>

  99. <li><a class="reference internal" href="#functions">Functions</a></li>

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  101. <li><a class="reference internal" href="#hkey-constants">HKEY_* Constants</a></li>

  102. <li><a class="reference internal" href="#access-rights">Access Rights</a><ul>

  103. <li><a class="reference internal" href="#bit-specific">64-bit Specific</a></li>

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  109. <li><a class="reference internal" href="#registry-handle-objects">Registry Handle Objects</a></li>

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  202.   <section id="module-winreg">

  203. <span id="winreg-windows-registry-access"></span><h1><a class="reference internal" href="#module-winreg" title="winreg: Routines and objects for manipulating the Windows registry. (Windows)"><code class="xref py py-mod docutils literal notranslate"><span class="pre">winreg</span></code></a> — Windows registry access<a class="headerlink" href="#module-winreg" title="Link to this heading">¶</a></h1>

  204. <hr class="docutils" />

  205. <p>These functions expose the Windows registry API to Python.  Instead of using an

  206. integer as the registry handle, a <a class="reference internal" href="#handle-object"><span class="std std-ref">handle object</span></a> is used

  207. to ensure that the handles are closed correctly, even if the programmer neglects

  208. to explicitly close them.</p>

  209. <div class="versionchanged" id="exception-changed">

  210. <p><span class="versionmodified changed">Changed in version 3.3: </span>Several functions in this module used to raise a

  211. <a class="reference internal" href="exceptions.html#WindowsError" title="WindowsError"><code class="xref py py-exc docutils literal notranslate"><span class="pre">WindowsError</span></code></a>, which is now an alias of <a class="reference internal" href="exceptions.html#OSError" title="OSError"><code class="xref py py-exc docutils literal notranslate"><span class="pre">OSError</span></code></a>.</p>

  212. </div>

  213. <section id="functions">

  214. <span id="id1"></span><h2>Functions<a class="headerlink" href="#functions" title="Link to this heading">¶</a></h2>

  215. <p>This module offers the following functions:</p>

  216. <dl class="py function">

  217. <dt class="sig sig-object py" id="winreg.CloseKey">

  218. <span class="sig-prename descclassname"><span class="pre">winreg.</span></span><span class="sig-name descname"><span class="pre">CloseKey</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">hkey</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#winreg.CloseKey" title="Link to this definition">¶</a></dt>

  219. <dd><p>Closes a previously opened registry key.  The <em>hkey</em> argument specifies a

  220. previously opened key.</p>

  221. <div class="admonition note">

  222. <p class="admonition-title">Note</p>

  223. <p>If <em>hkey</em> is not closed using this method (or via <a class="reference internal" href="#winreg.PyHKEY.Close" title="winreg.PyHKEY.Close"><code class="xref py py-meth docutils literal notranslate"><span class="pre">hkey.Close()</span></code></a>), it is closed when the <em>hkey</em> object is destroyed by

  224. Python.</p>

  225. </div>

  226. </dd></dl>

  227. 

  228. <dl class="py function">

  229. <dt class="sig sig-object py" id="winreg.ConnectRegistry">

  230. <span class="sig-prename descclassname"><span class="pre">winreg.</span></span><span class="sig-name descname"><span class="pre">ConnectRegistry</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">computer_name</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">key</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#winreg.ConnectRegistry" title="Link to this definition">¶</a></dt>

  231. <dd><p>Establishes a connection to a predefined registry handle on another computer,

  232. and returns a <a class="reference internal" href="#handle-object"><span class="std std-ref">handle object</span></a>.</p>

  233. <p><em>computer_name</em> is the name of the remote computer, of the form

  234. <code class="docutils literal notranslate"><span class="pre">r&quot;\\computername&quot;</span></code>.  If <code class="docutils literal notranslate"><span class="pre">None</span></code>, the local computer is used.</p>

  235. <p><em>key</em> is the predefined handle to connect to.</p>

  236. <p>The return value is the handle of the opened key. If the function fails, an

  237. <a class="reference internal" href="exceptions.html#OSError" title="OSError"><code class="xref py py-exc docutils literal notranslate"><span class="pre">OSError</span></code></a> exception is raised.</p>

  238. <p class="audit-hook">Raises an <a class="reference internal" href="sys.html#auditing"><span class="std std-ref">auditing event</span></a> <code class="docutils literal notranslate"><span class="pre">winreg.ConnectRegistry</span></code> with arguments <code class="docutils literal notranslate"><span class="pre">computer_name</span></code>, <code class="docutils literal notranslate"><span class="pre">key</span></code>.</p>

  239. <div class="versionchanged">

  240. <p><span class="versionmodified changed">Changed in version 3.3: </span>See <a class="reference internal" href="#exception-changed"><span class="std std-ref">above</span></a>.</p>

  241. </div>

  242. </dd></dl>

  243. 

  244. <dl class="py function">

  245. <dt class="sig sig-object py" id="winreg.CreateKey">

  246. <span class="sig-prename descclassname"><span class="pre">winreg.</span></span><span class="sig-name descname"><span class="pre">CreateKey</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">key</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">sub_key</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#winreg.CreateKey" title="Link to this definition">¶</a></dt>

  247. <dd><p>Creates or opens the specified key, returning a

  248. <a class="reference internal" href="#handle-object"><span class="std std-ref">handle object</span></a>.</p>

  249. <p><em>key</em> is an already open key, or one of the predefined

  250. <a class="reference internal" href="#hkey-constants"><span class="std std-ref">HKEY_* constants</span></a>.</p>

  251. <p><em>sub_key</em> is a string that names the key this method opens or creates.</p>

  252. <p>If <em>key</em> is one of the predefined keys, <em>sub_key</em> may be <code class="docutils literal notranslate"><span class="pre">None</span></code>. In that

  253. case, the handle returned is the same key handle passed in to the function.</p>

  254. <p>If the key already exists, this function opens the existing key.</p>

  255. <p>The return value is the handle of the opened key. If the function fails, an

  256. <a class="reference internal" href="exceptions.html#OSError" title="OSError"><code class="xref py py-exc docutils literal notranslate"><span class="pre">OSError</span></code></a> exception is raised.</p>

  257. <p class="audit-hook">Raises an <a class="reference internal" href="sys.html#auditing"><span class="std std-ref">auditing event</span></a> <code class="docutils literal notranslate"><span class="pre">winreg.CreateKey</span></code> with arguments <code class="docutils literal notranslate"><span class="pre">key</span></code>, <code class="docutils literal notranslate"><span class="pre">sub_key</span></code>, <code class="docutils literal notranslate"><span class="pre">access</span></code>.</p>

  258. <p class="audit-hook">Raises an <a class="reference internal" href="sys.html#auditing"><span class="std std-ref">auditing event</span></a> <code class="docutils literal notranslate"><span class="pre">winreg.OpenKey/result</span></code> with argument <code class="docutils literal notranslate"><span class="pre">key</span></code>.</p>

  259. <div class="versionchanged">

  260. <p><span class="versionmodified changed">Changed in version 3.3: </span>See <a class="reference internal" href="#exception-changed"><span class="std std-ref">above</span></a>.</p>

  261. </div>

  262. </dd></dl>

  263. 

  264. <dl class="py function">

  265. <dt class="sig sig-object py" id="winreg.CreateKeyEx">

  266. <span class="sig-prename descclassname"><span class="pre">winreg.</span></span><span class="sig-name descname"><span class="pre">CreateKeyEx</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">key</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">sub_key</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">reserved</span></span><span class="o"><span class="pre">=</span></span><span class="default_value"><span class="pre">0</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">access</span></span><span class="o"><span class="pre">=</span></span><span class="default_value"><span class="pre">KEY_WRITE</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#winreg.CreateKeyEx" title="Link to this definition">¶</a></dt>

  267. <dd><p>Creates or opens the specified key, returning a

  268. <a class="reference internal" href="#handle-object"><span class="std std-ref">handle object</span></a>.</p>

  269. <p><em>key</em> is an already open key, or one of the predefined

  270. <a class="reference internal" href="#hkey-constants"><span class="std std-ref">HKEY_* constants</span></a>.</p>

  271. <p><em>sub_key</em> is a string that names the key this method opens or creates.</p>

  272. <p><em>reserved</em> is a reserved integer, and must be zero. The default is zero.</p>

  273. <p><em>access</em> is an integer that specifies an access mask that describes the desired

  274. security access for the key.  Default is <a class="reference internal" href="#winreg.KEY_WRITE" title="winreg.KEY_WRITE"><code class="xref py py-const docutils literal notranslate"><span class="pre">KEY_WRITE</span></code></a>.  See

  275. <a class="reference internal" href="#access-rights"><span class="std std-ref">Access Rights</span></a> for other allowed values.</p>

  276. <p>If <em>key</em> is one of the predefined keys, <em>sub_key</em> may be <code class="docutils literal notranslate"><span class="pre">None</span></code>. In that

  277. case, the handle returned is the same key handle passed in to the function.</p>

  278. <p>If the key already exists, this function opens the existing key.</p>

  279. <p>The return value is the handle of the opened key. If the function fails, an

  280. <a class="reference internal" href="exceptions.html#OSError" title="OSError"><code class="xref py py-exc docutils literal notranslate"><span class="pre">OSError</span></code></a> exception is raised.</p>

  281. <p class="audit-hook">Raises an <a class="reference internal" href="sys.html#auditing"><span class="std std-ref">auditing event</span></a> <code class="docutils literal notranslate"><span class="pre">winreg.CreateKey</span></code> with arguments <code class="docutils literal notranslate"><span class="pre">key</span></code>, <code class="docutils literal notranslate"><span class="pre">sub_key</span></code>, <code class="docutils literal notranslate"><span class="pre">access</span></code>.</p>

  282. <p class="audit-hook">Raises an <a class="reference internal" href="sys.html#auditing"><span class="std std-ref">auditing event</span></a> <code class="docutils literal notranslate"><span class="pre">winreg.OpenKey/result</span></code> with argument <code class="docutils literal notranslate"><span class="pre">key</span></code>.</p>

  283. <div class="versionadded">

  284. <p><span class="versionmodified added">New in version 3.2.</span></p>

  285. </div>

  286. <div class="versionchanged">

  287. <p><span class="versionmodified changed">Changed in version 3.3: </span>See <a class="reference internal" href="#exception-changed"><span class="std std-ref">above</span></a>.</p>

  288. </div>

  289. </dd></dl>

  290. 

  291. <dl class="py function">

  292. <dt class="sig sig-object py" id="winreg.DeleteKey">

  293. <span class="sig-prename descclassname"><span class="pre">winreg.</span></span><span class="sig-name descname"><span class="pre">DeleteKey</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">key</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">sub_key</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#winreg.DeleteKey" title="Link to this definition">¶</a></dt>

  294. <dd><p>Deletes the specified key.</p>

  295. <p><em>key</em> is an already open key, or one of the predefined

  296. <a class="reference internal" href="#hkey-constants"><span class="std std-ref">HKEY_* constants</span></a>.</p>

  297. <p><em>sub_key</em> is a string that must be a subkey of the key identified by the <em>key</em>

  298. parameter.  This value must not be <code class="docutils literal notranslate"><span class="pre">None</span></code>, and the key may not have subkeys.</p>

  299. <p><em>This method can not delete keys with subkeys.</em></p>

  300. <p>If the method succeeds, the entire key, including all of its values, is removed.

  301. If the method fails, an <a class="reference internal" href="exceptions.html#OSError" title="OSError"><code class="xref py py-exc docutils literal notranslate"><span class="pre">OSError</span></code></a> exception is raised.</p>

  302. <p class="audit-hook">Raises an <a class="reference internal" href="sys.html#auditing"><span class="std std-ref">auditing event</span></a> <code class="docutils literal notranslate"><span class="pre">winreg.DeleteKey</span></code> with arguments <code class="docutils literal notranslate"><span class="pre">key</span></code>, <code class="docutils literal notranslate"><span class="pre">sub_key</span></code>, <code class="docutils literal notranslate"><span class="pre">access</span></code>.</p>

  303. <div class="versionchanged">

  304. <p><span class="versionmodified changed">Changed in version 3.3: </span>See <a class="reference internal" href="#exception-changed"><span class="std std-ref">above</span></a>.</p>

  305. </div>

  306. </dd></dl>

  307. 

  308. <dl class="py function">

  309. <dt class="sig sig-object py" id="winreg.DeleteKeyEx">

  310. <span class="sig-prename descclassname"><span class="pre">winreg.</span></span><span class="sig-name descname"><span class="pre">DeleteKeyEx</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">key</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">sub_key</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">access</span></span><span class="o"><span class="pre">=</span></span><span class="default_value"><span class="pre">KEY_WOW64_64KEY</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">reserved</span></span><span class="o"><span class="pre">=</span></span><span class="default_value"><span class="pre">0</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#winreg.DeleteKeyEx" title="Link to this definition">¶</a></dt>

  311. <dd><p>Deletes the specified key.</p>

  312. <p><em>key</em> is an already open key, or one of the predefined

  313. <a class="reference internal" href="#hkey-constants"><span class="std std-ref">HKEY_* constants</span></a>.</p>

  314. <p><em>sub_key</em> is a string that must be a subkey of the key identified by the

  315. <em>key</em> parameter. This value must not be <code class="docutils literal notranslate"><span class="pre">None</span></code>, and the key may not have

  316. subkeys.</p>

  317. <p><em>reserved</em> is a reserved integer, and must be zero. The default is zero.</p>

  318. <p><em>access</em> is an integer that specifies an access mask that describes the

  319. desired security access for the key.  Default is <a class="reference internal" href="#winreg.KEY_WOW64_64KEY" title="winreg.KEY_WOW64_64KEY"><code class="xref py py-const docutils literal notranslate"><span class="pre">KEY_WOW64_64KEY</span></code></a>.

  320. On 32-bit Windows, the WOW64 constants are ignored.

  321. See <a class="reference internal" href="#access-rights"><span class="std std-ref">Access Rights</span></a> for other allowed values.</p>

  322. <p><em>This method can not delete keys with subkeys.</em></p>

  323. <p>If the method succeeds, the entire key, including all of its values, is

  324. removed. If the method fails, an <a class="reference internal" href="exceptions.html#OSError" title="OSError"><code class="xref py py-exc docutils literal notranslate"><span class="pre">OSError</span></code></a> exception is raised.</p>

  325. <p>On unsupported Windows versions, <a class="reference internal" href="exceptions.html#NotImplementedError" title="NotImplementedError"><code class="xref py py-exc docutils literal notranslate"><span class="pre">NotImplementedError</span></code></a> is raised.</p>

  326. <p class="audit-hook">Raises an <a class="reference internal" href="sys.html#auditing"><span class="std std-ref">auditing event</span></a> <code class="docutils literal notranslate"><span class="pre">winreg.DeleteKey</span></code> with arguments <code class="docutils literal notranslate"><span class="pre">key</span></code>, <code class="docutils literal notranslate"><span class="pre">sub_key</span></code>, <code class="docutils literal notranslate"><span class="pre">access</span></code>.</p>

  327. <div class="versionadded">

  328. <p><span class="versionmodified added">New in version 3.2.</span></p>

  329. </div>

  330. <div class="versionchanged">

  331. <p><span class="versionmodified changed">Changed in version 3.3: </span>See <a class="reference internal" href="#exception-changed"><span class="std std-ref">above</span></a>.</p>

  332. </div>

  333. </dd></dl>

  334. 

  335. <dl class="py function">

  336. <dt class="sig sig-object py" id="winreg.DeleteValue">

  337. <span class="sig-prename descclassname"><span class="pre">winreg.</span></span><span class="sig-name descname"><span class="pre">DeleteValue</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">key</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">value</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#winreg.DeleteValue" title="Link to this definition">¶</a></dt>

  338. <dd><p>Removes a named value from a registry key.</p>

  339. <p><em>key</em> is an already open key, or one of the predefined

  340. <a class="reference internal" href="#hkey-constants"><span class="std std-ref">HKEY_* constants</span></a>.</p>

  341. <p><em>value</em> is a string that identifies the value to remove.</p>

  342. <p class="audit-hook">Raises an <a class="reference internal" href="sys.html#auditing"><span class="std std-ref">auditing event</span></a> <code class="docutils literal notranslate"><span class="pre">winreg.DeleteValue</span></code> with arguments <code class="docutils literal notranslate"><span class="pre">key</span></code>, <code class="docutils literal notranslate"><span class="pre">value</span></code>.</p>

  343. </dd></dl>

  344. 

  345. <dl class="py function">

  346. <dt class="sig sig-object py" id="winreg.EnumKey">

  347. <span class="sig-prename descclassname"><span class="pre">winreg.</span></span><span class="sig-name descname"><span class="pre">EnumKey</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">key</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">index</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#winreg.EnumKey" title="Link to this definition">¶</a></dt>

  348. <dd><p>Enumerates subkeys of an open registry key, returning a string.</p>

  349. <p><em>key</em> is an already open key, or one of the predefined

  350. <a class="reference internal" href="#hkey-constants"><span class="std std-ref">HKEY_* constants</span></a>.</p>

  351. <p><em>index</em> is an integer that identifies the index of the key to retrieve.</p>

  352. <p>The function retrieves the name of one subkey each time it is called.  It is

  353. typically called repeatedly until an <a class="reference internal" href="exceptions.html#OSError" title="OSError"><code class="xref py py-exc docutils literal notranslate"><span class="pre">OSError</span></code></a> exception is

  354. raised, indicating, no more values are available.</p>

  355. <p class="audit-hook">Raises an <a class="reference internal" href="sys.html#auditing"><span class="std std-ref">auditing event</span></a> <code class="docutils literal notranslate"><span class="pre">winreg.EnumKey</span></code> with arguments <code class="docutils literal notranslate"><span class="pre">key</span></code>, <code class="docutils literal notranslate"><span class="pre">index</span></code>.</p>

  356. <div class="versionchanged">

  357. <p><span class="versionmodified changed">Changed in version 3.3: </span>See <a class="reference internal" href="#exception-changed"><span class="std std-ref">above</span></a>.</p>

  358. </div>

  359. </dd></dl>

  360. 

  361. <dl class="py function">

  362. <dt class="sig sig-object py" id="winreg.EnumValue">

  363. <span class="sig-prename descclassname"><span class="pre">winreg.</span></span><span class="sig-name descname"><span class="pre">EnumValue</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">key</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">index</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#winreg.EnumValue" title="Link to this definition">¶</a></dt>

  364. <dd><p>Enumerates values of an open registry key, returning a tuple.</p>

  365. <p><em>key</em> is an already open key, or one of the predefined

  366. <a class="reference internal" href="#hkey-constants"><span class="std std-ref">HKEY_* constants</span></a>.</p>

  367. <p><em>index</em> is an integer that identifies the index of the value to retrieve.</p>

  368. <p>The function retrieves the name of one subkey each time it is called. It is

  369. typically called repeatedly, until an <a class="reference internal" href="exceptions.html#OSError" title="OSError"><code class="xref py py-exc docutils literal notranslate"><span class="pre">OSError</span></code></a> exception is

  370. raised, indicating no more values.</p>

  371. <p>The result is a tuple of 3 items:</p>

  372. <table class="docutils align-default">

  373. <thead>

  374. <tr class="row-odd"><th class="head"><p>Index</p></th>

  375. <th class="head"><p>Meaning</p></th>

  376. </tr>

  377. </thead>

  378. <tbody>

  379. <tr class="row-even"><td><p><code class="docutils literal notranslate"><span class="pre">0</span></code></p></td>

  380. <td><p>A string that identifies the value name</p></td>

  381. </tr>

  382. <tr class="row-odd"><td><p><code class="docutils literal notranslate"><span class="pre">1</span></code></p></td>

  383. <td><p>An object that holds the value data, and

  384. whose type depends on the underlying

  385. registry type</p></td>

  386. </tr>

  387. <tr class="row-even"><td><p><code class="docutils literal notranslate"><span class="pre">2</span></code></p></td>

  388. <td><p>An integer that identifies the type of the

  389. value data (see table in docs for

  390. <a class="reference internal" href="#winreg.SetValueEx" title="winreg.SetValueEx"><code class="xref py py-meth docutils literal notranslate"><span class="pre">SetValueEx()</span></code></a>)</p></td>

  391. </tr>

  392. </tbody>

  393. </table>

  394. <p class="audit-hook">Raises an <a class="reference internal" href="sys.html#auditing"><span class="std std-ref">auditing event</span></a> <code class="docutils literal notranslate"><span class="pre">winreg.EnumValue</span></code> with arguments <code class="docutils literal notranslate"><span class="pre">key</span></code>, <code class="docutils literal notranslate"><span class="pre">index</span></code>.</p>

  395. <div class="versionchanged">

  396. <p><span class="versionmodified changed">Changed in version 3.3: </span>See <a class="reference internal" href="#exception-changed"><span class="std std-ref">above</span></a>.</p>

  397. </div>

  398. </dd></dl>

  399. 

  400. <dl class="py function" id="index-0">

  401. <dt class="sig sig-object py" id="winreg.ExpandEnvironmentStrings">

  402. <span class="sig-prename descclassname"><span class="pre">winreg.</span></span><span class="sig-name descname"><span class="pre">ExpandEnvironmentStrings</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">str</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#winreg.ExpandEnvironmentStrings" title="Link to this definition">¶</a></dt>

  403. <dd><p>Expands environment variable placeholders <code class="docutils literal notranslate"><span class="pre">%NAME%</span></code> in strings like

  404. <a class="reference internal" href="#winreg.REG_EXPAND_SZ" title="winreg.REG_EXPAND_SZ"><code class="xref py py-const docutils literal notranslate"><span class="pre">REG_EXPAND_SZ</span></code></a>:</p>

  405. <div class="highlight-python3 notranslate"><div class="highlight"><pre><span></span><span class="gp">&gt;&gt;&gt; </span><span class="n">ExpandEnvironmentStrings</span><span class="p">(</span><span class="s1">&#39;%windir%&#39;</span><span class="p">)</span>

  406. <span class="go">&#39;C:\\Windows&#39;</span>

  407. </pre></div>

  408. </div>

  409. <p class="audit-hook">Raises an <a class="reference internal" href="sys.html#auditing"><span class="std std-ref">auditing event</span></a> <code class="docutils literal notranslate"><span class="pre">winreg.ExpandEnvironmentStrings</span></code> with argument <code class="docutils literal notranslate"><span class="pre">str</span></code>.</p>

  410. </dd></dl>

  411. 

  412. <dl class="py function">

  413. <dt class="sig sig-object py" id="winreg.FlushKey">

  414. <span class="sig-prename descclassname"><span class="pre">winreg.</span></span><span class="sig-name descname"><span class="pre">FlushKey</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">key</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#winreg.FlushKey" title="Link to this definition">¶</a></dt>

  415. <dd><p>Writes all the attributes of a key to the registry.</p>

  416. <p><em>key</em> is an already open key, or one of the predefined

  417. <a class="reference internal" href="#hkey-constants"><span class="std std-ref">HKEY_* constants</span></a>.</p>

  418. <p>It is not necessary to call <a class="reference internal" href="#winreg.FlushKey" title="winreg.FlushKey"><code class="xref py py-func docutils literal notranslate"><span class="pre">FlushKey()</span></code></a> to change a key. Registry changes are

  419. flushed to disk by the registry using its lazy flusher.  Registry changes are

  420. also flushed to disk at system shutdown.  Unlike <a class="reference internal" href="#winreg.CloseKey" title="winreg.CloseKey"><code class="xref py py-func docutils literal notranslate"><span class="pre">CloseKey()</span></code></a>, the

  421. <a class="reference internal" href="#winreg.FlushKey" title="winreg.FlushKey"><code class="xref py py-func docutils literal notranslate"><span class="pre">FlushKey()</span></code></a> method returns only when all the data has been written to the

  422. registry. An application should only call <a class="reference internal" href="#winreg.FlushKey" title="winreg.FlushKey"><code class="xref py py-func docutils literal notranslate"><span class="pre">FlushKey()</span></code></a> if it requires

  423. absolute certainty that registry changes are on disk.</p>

  424. <div class="admonition note">

  425. <p class="admonition-title">Note</p>

  426. <p>If you don’t know whether a <a class="reference internal" href="#winreg.FlushKey" title="winreg.FlushKey"><code class="xref py py-func docutils literal notranslate"><span class="pre">FlushKey()</span></code></a> call is required, it probably

  427. isn’t.</p>

  428. </div>

  429. </dd></dl>

  430. 

  431. <dl class="py function">

  432. <dt class="sig sig-object py" id="winreg.LoadKey">

  433. <span class="sig-prename descclassname"><span class="pre">winreg.</span></span><span class="sig-name descname"><span class="pre">LoadKey</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">key</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">sub_key</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">file_name</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#winreg.LoadKey" title="Link to this definition">¶</a></dt>

  434. <dd><p>Creates a subkey under the specified key and stores registration information

  435. from a specified file into that subkey.</p>

  436. <p><em>key</em> is a handle returned by <a class="reference internal" href="#winreg.ConnectRegistry" title="winreg.ConnectRegistry"><code class="xref py py-func docutils literal notranslate"><span class="pre">ConnectRegistry()</span></code></a> or one of the constants

  437. <a class="reference internal" href="#winreg.HKEY_USERS" title="winreg.HKEY_USERS"><code class="xref py py-const docutils literal notranslate"><span class="pre">HKEY_USERS</span></code></a> or <a class="reference internal" href="#winreg.HKEY_LOCAL_MACHINE" title="winreg.HKEY_LOCAL_MACHINE"><code class="xref py py-const docutils literal notranslate"><span class="pre">HKEY_LOCAL_MACHINE</span></code></a>.</p>

  438. <p><em>sub_key</em> is a string that identifies the subkey to load.</p>

  439. <p><em>file_name</em> is the name of the file to load registry data from. This file must

  440. have been created with the <a class="reference internal" href="#winreg.SaveKey" title="winreg.SaveKey"><code class="xref py py-func docutils literal notranslate"><span class="pre">SaveKey()</span></code></a> function. Under the file allocation

  441. table (FAT) file system, the filename may not have an extension.</p>

  442. <p>A call to <a class="reference internal" href="#winreg.LoadKey" title="winreg.LoadKey"><code class="xref py py-func docutils literal notranslate"><span class="pre">LoadKey()</span></code></a> fails if the calling process does not have the

  443. <code class="xref c c-data docutils literal notranslate"><span class="pre">SE_RESTORE_PRIVILEGE</span></code> privilege.  Note that privileges are different

  444. from permissions – see the <a class="reference external" href="https://msdn.microsoft.com/en-us/library/ms724889%28v=VS.85%29.aspx">RegLoadKey documentation</a> for

  445. more details.</p>

  446. <p>If <em>key</em> is a handle returned by <a class="reference internal" href="#winreg.ConnectRegistry" title="winreg.ConnectRegistry"><code class="xref py py-func docutils literal notranslate"><span class="pre">ConnectRegistry()</span></code></a>, then the path

  447. specified in <em>file_name</em> is relative to the remote computer.</p>

  448. <p class="audit-hook">Raises an <a class="reference internal" href="sys.html#auditing"><span class="std std-ref">auditing event</span></a> <code class="docutils literal notranslate"><span class="pre">winreg.LoadKey</span></code> with arguments <code class="docutils literal notranslate"><span class="pre">key</span></code>, <code class="docutils literal notranslate"><span class="pre">sub_key</span></code>, <code class="docutils literal notranslate"><span class="pre">file_name</span></code>.</p>

  449. </dd></dl>

  450. 

  451. <dl class="py function">

  452. <dt class="sig sig-object py" id="winreg.OpenKey">

  453. <span class="sig-prename descclassname"><span class="pre">winreg.</span></span><span class="sig-name descname"><span class="pre">OpenKey</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">key</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">sub_key</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">reserved</span></span><span class="o"><span class="pre">=</span></span><span class="default_value"><span class="pre">0</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">access</span></span><span class="o"><span class="pre">=</span></span><span class="default_value"><span class="pre">KEY_READ</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#winreg.OpenKey" title="Link to this definition">¶</a></dt>

  454. <dt class="sig sig-object py" id="winreg.OpenKeyEx">

  455. <span class="sig-prename descclassname"><span class="pre">winreg.</span></span><span class="sig-name descname"><span class="pre">OpenKeyEx</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">key</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">sub_key</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">reserved</span></span><span class="o"><span class="pre">=</span></span><span class="default_value"><span class="pre">0</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">access</span></span><span class="o"><span class="pre">=</span></span><span class="default_value"><span class="pre">KEY_READ</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#winreg.OpenKeyEx" title="Link to this definition">¶</a></dt>

  456. <dd><p>Opens the specified key, returning a <a class="reference internal" href="#handle-object"><span class="std std-ref">handle object</span></a>.</p>

  457. <p><em>key</em> is an already open key, or one of the predefined

  458. <a class="reference internal" href="#hkey-constants"><span class="std std-ref">HKEY_* constants</span></a>.</p>

  459. <p><em>sub_key</em> is a string that identifies the sub_key to open.</p>

  460. <p><em>reserved</em> is a reserved integer, and must be zero.  The default is zero.</p>

  461. <p><em>access</em> is an integer that specifies an access mask that describes the desired

  462. security access for the key.  Default is <a class="reference internal" href="#winreg.KEY_READ" title="winreg.KEY_READ"><code class="xref py py-const docutils literal notranslate"><span class="pre">KEY_READ</span></code></a>.  See <a class="reference internal" href="#access-rights"><span class="std std-ref">Access

  463. Rights</span></a> for other allowed values.</p>

  464. <p>The result is a new handle to the specified key.</p>

  465. <p>If the function fails, <a class="reference internal" href="exceptions.html#OSError" title="OSError"><code class="xref py py-exc docutils literal notranslate"><span class="pre">OSError</span></code></a> is raised.</p>

  466. <p class="audit-hook">Raises an <a class="reference internal" href="sys.html#auditing"><span class="std std-ref">auditing event</span></a> <code class="docutils literal notranslate"><span class="pre">winreg.OpenKey</span></code> with arguments <code class="docutils literal notranslate"><span class="pre">key</span></code>, <code class="docutils literal notranslate"><span class="pre">sub_key</span></code>, <code class="docutils literal notranslate"><span class="pre">access</span></code>.</p>

  467. <p class="audit-hook">Raises an <a class="reference internal" href="sys.html#auditing"><span class="std std-ref">auditing event</span></a> <code class="docutils literal notranslate"><span class="pre">winreg.OpenKey/result</span></code> with argument <code class="docutils literal notranslate"><span class="pre">key</span></code>.</p>

  468. <div class="versionchanged">

  469. <p><span class="versionmodified changed">Changed in version 3.2: </span>Allow the use of named arguments.</p>

  470. </div>

  471. <div class="versionchanged">

  472. <p><span class="versionmodified changed">Changed in version 3.3: </span>See <a class="reference internal" href="#exception-changed"><span class="std std-ref">above</span></a>.</p>

  473. </div>

  474. </dd></dl>

  475. 

  476. <dl class="py function">

  477. <dt class="sig sig-object py" id="winreg.QueryInfoKey">

  478. <span class="sig-prename descclassname"><span class="pre">winreg.</span></span><span class="sig-name descname"><span class="pre">QueryInfoKey</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">key</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#winreg.QueryInfoKey" title="Link to this definition">¶</a></dt>

  479. <dd><p>Returns information about a key, as a tuple.</p>

  480. <p><em>key</em> is an already open key, or one of the predefined

  481. <a class="reference internal" href="#hkey-constants"><span class="std std-ref">HKEY_* constants</span></a>.</p>

  482. <p>The result is a tuple of 3 items:</p>

  483. <table class="docutils align-default">

  484. <thead>

  485. <tr class="row-odd"><th class="head"><p>Index</p></th>

  486. <th class="head"><p>Meaning</p></th>

  487. </tr>

  488. </thead>

  489. <tbody>

  490. <tr class="row-even"><td><p><code class="docutils literal notranslate"><span class="pre">0</span></code></p></td>

  491. <td><p>An integer giving the number of sub keys

  492. this key has.</p></td>

  493. </tr>

  494. <tr class="row-odd"><td><p><code class="docutils literal notranslate"><span class="pre">1</span></code></p></td>

  495. <td><p>An integer giving the number of values this

  496. key has.</p></td>

  497. </tr>

  498. <tr class="row-even"><td><p><code class="docutils literal notranslate"><span class="pre">2</span></code></p></td>

  499. <td><p>An integer giving when the key was last

  500. modified (if available) as 100’s of

  501. nanoseconds since Jan 1, 1601.</p></td>

  502. </tr>

  503. </tbody>

  504. </table>

  505. <p class="audit-hook">Raises an <a class="reference internal" href="sys.html#auditing"><span class="std std-ref">auditing event</span></a> <code class="docutils literal notranslate"><span class="pre">winreg.QueryInfoKey</span></code> with argument <code class="docutils literal notranslate"><span class="pre">key</span></code>.</p>

  506. </dd></dl>

  507. 

  508. <dl class="py function">

  509. <dt class="sig sig-object py" id="winreg.QueryValue">

  510. <span class="sig-prename descclassname"><span class="pre">winreg.</span></span><span class="sig-name descname"><span class="pre">QueryValue</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">key</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">sub_key</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#winreg.QueryValue" title="Link to this definition">¶</a></dt>

  511. <dd><p>Retrieves the unnamed value for a key, as a string.</p>

  512. <p><em>key</em> is an already open key, or one of the predefined

  513. <a class="reference internal" href="#hkey-constants"><span class="std std-ref">HKEY_* constants</span></a>.</p>

  514. <p><em>sub_key</em> is a string that holds the name of the subkey with which the value is

  515. associated.  If this parameter is <code class="docutils literal notranslate"><span class="pre">None</span></code> or empty, the function retrieves the

  516. value set by the <a class="reference internal" href="#winreg.SetValue" title="winreg.SetValue"><code class="xref py py-func docutils literal notranslate"><span class="pre">SetValue()</span></code></a> method for the key identified by <em>key</em>.</p>

  517. <p>Values in the registry have name, type, and data components. This method

  518. retrieves the data for a key’s first value that has a <code class="docutils literal notranslate"><span class="pre">NULL</span></code> name. But the

  519. underlying API call doesn’t return the type, so always use

  520. <a class="reference internal" href="#winreg.QueryValueEx" title="winreg.QueryValueEx"><code class="xref py py-func docutils literal notranslate"><span class="pre">QueryValueEx()</span></code></a> if possible.</p>

  521. <p class="audit-hook">Raises an <a class="reference internal" href="sys.html#auditing"><span class="std std-ref">auditing event</span></a> <code class="docutils literal notranslate"><span class="pre">winreg.QueryValue</span></code> with arguments <code class="docutils literal notranslate"><span class="pre">key</span></code>, <code class="docutils literal notranslate"><span class="pre">sub_key</span></code>, <code class="docutils literal notranslate"><span class="pre">value_name</span></code>.</p>

  522. </dd></dl>

  523. 

  524. <dl class="py function">

  525. <dt class="sig sig-object py" id="winreg.QueryValueEx">

  526. <span class="sig-prename descclassname"><span class="pre">winreg.</span></span><span class="sig-name descname"><span class="pre">QueryValueEx</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">key</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">value_name</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#winreg.QueryValueEx" title="Link to this definition">¶</a></dt>

  527. <dd><p>Retrieves the type and data for a specified value name associated with

  528. an open registry key.</p>

  529. <p><em>key</em> is an already open key, or one of the predefined

  530. <a class="reference internal" href="#hkey-constants"><span class="std std-ref">HKEY_* constants</span></a>.</p>

  531. <p><em>value_name</em> is a string indicating the value to query.</p>

  532. <p>The result is a tuple of 2 items:</p>

  533. <table class="docutils align-default">

  534. <thead>

  535. <tr class="row-odd"><th class="head"><p>Index</p></th>

  536. <th class="head"><p>Meaning</p></th>

  537. </tr>

  538. </thead>

  539. <tbody>

  540. <tr class="row-even"><td><p><code class="docutils literal notranslate"><span class="pre">0</span></code></p></td>

  541. <td><p>The value of the registry item.</p></td>

  542. </tr>

  543. <tr class="row-odd"><td><p><code class="docutils literal notranslate"><span class="pre">1</span></code></p></td>

  544. <td><p>An integer giving the registry type for

  545. this value (see table in docs for

  546. <a class="reference internal" href="#winreg.SetValueEx" title="winreg.SetValueEx"><code class="xref py py-meth docutils literal notranslate"><span class="pre">SetValueEx()</span></code></a>)</p></td>

  547. </tr>

  548. </tbody>

  549. </table>

  550. <p class="audit-hook">Raises an <a class="reference internal" href="sys.html#auditing"><span class="std std-ref">auditing event</span></a> <code class="docutils literal notranslate"><span class="pre">winreg.QueryValue</span></code> with arguments <code class="docutils literal notranslate"><span class="pre">key</span></code>, <code class="docutils literal notranslate"><span class="pre">sub_key</span></code>, <code class="docutils literal notranslate"><span class="pre">value_name</span></code>.</p>

  551. </dd></dl>

  552. 

  553. <dl class="py function">

  554. <dt class="sig sig-object py" id="winreg.SaveKey">

  555. <span class="sig-prename descclassname"><span class="pre">winreg.</span></span><span class="sig-name descname"><span class="pre">SaveKey</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">key</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">file_name</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#winreg.SaveKey" title="Link to this definition">¶</a></dt>

  556. <dd><p>Saves the specified key, and all its subkeys to the specified file.</p>

  557. <p><em>key</em> is an already open key, or one of the predefined

  558. <a class="reference internal" href="#hkey-constants"><span class="std std-ref">HKEY_* constants</span></a>.</p>

  559. <p><em>file_name</em> is the name of the file to save registry data to.  This file

  560. cannot already exist. If this filename includes an extension, it cannot be

  561. used on file allocation table (FAT) file systems by the <a class="reference internal" href="#winreg.LoadKey" title="winreg.LoadKey"><code class="xref py py-meth docutils literal notranslate"><span class="pre">LoadKey()</span></code></a>

  562. method.</p>

  563. <p>If <em>key</em> represents a key on a remote computer, the path described by

  564. <em>file_name</em> is relative to the remote computer. The caller of this method must

  565. possess the <strong>SeBackupPrivilege</strong> security privilege.  Note that

  566. privileges are different than permissions – see the

  567. <a class="reference external" href="https://msdn.microsoft.com/en-us/library/ms724878%28v=VS.85%29.aspx">Conflicts Between User Rights and Permissions documentation</a>

  568. for more details.</p>

  569. <p>This function passes <code class="docutils literal notranslate"><span class="pre">NULL</span></code> for <em>security_attributes</em> to the API.</p>

  570. <p class="audit-hook">Raises an <a class="reference internal" href="sys.html#auditing"><span class="std std-ref">auditing event</span></a> <code class="docutils literal notranslate"><span class="pre">winreg.SaveKey</span></code> with arguments <code class="docutils literal notranslate"><span class="pre">key</span></code>, <code class="docutils literal notranslate"><span class="pre">file_name</span></code>.</p>

  571. </dd></dl>

  572. 

  573. <dl class="py function">

  574. <dt class="sig sig-object py" id="winreg.SetValue">

  575. <span class="sig-prename descclassname"><span class="pre">winreg.</span></span><span class="sig-name descname"><span class="pre">SetValue</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">key</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">sub_key</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">type</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">value</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#winreg.SetValue" title="Link to this definition">¶</a></dt>

  576. <dd><p>Associates a value with a specified key.</p>

  577. <p><em>key</em> is an already open key, or one of the predefined

  578. <a class="reference internal" href="#hkey-constants"><span class="std std-ref">HKEY_* constants</span></a>.</p>

  579. <p><em>sub_key</em> is a string that names the subkey with which the value is associated.</p>

  580. <p><em>type</em> is an integer that specifies the type of the data. Currently this must be

  581. <a class="reference internal" href="#winreg.REG_SZ" title="winreg.REG_SZ"><code class="xref py py-const docutils literal notranslate"><span class="pre">REG_SZ</span></code></a>, meaning only strings are supported.  Use the <a class="reference internal" href="#winreg.SetValueEx" title="winreg.SetValueEx"><code class="xref py py-func docutils literal notranslate"><span class="pre">SetValueEx()</span></code></a>

  582. function for support for other data types.</p>

  583. <p><em>value</em> is a string that specifies the new value.</p>

  584. <p>If the key specified by the <em>sub_key</em> parameter does not exist, the SetValue

  585. function creates it.</p>

  586. <p>Value lengths are limited by available memory. Long values (more than 2048

  587. bytes) should be stored as files with the filenames stored in the configuration

  588. registry.  This helps the registry perform efficiently.</p>

  589. <p>The key identified by the <em>key</em> parameter must have been opened with

  590. <a class="reference internal" href="#winreg.KEY_SET_VALUE" title="winreg.KEY_SET_VALUE"><code class="xref py py-const docutils literal notranslate"><span class="pre">KEY_SET_VALUE</span></code></a> access.</p>

  591. <p class="audit-hook">Raises an <a class="reference internal" href="sys.html#auditing"><span class="std std-ref">auditing event</span></a> <code class="docutils literal notranslate"><span class="pre">winreg.SetValue</span></code> with arguments <code class="docutils literal notranslate"><span class="pre">key</span></code>, <code class="docutils literal notranslate"><span class="pre">sub_key</span></code>, <code class="docutils literal notranslate"><span class="pre">type</span></code>, <code class="docutils literal notranslate"><span class="pre">value</span></code>.</p>

  592. </dd></dl>

  593. 

  594. <dl class="py function">

  595. <dt class="sig sig-object py" id="winreg.SetValueEx">

  596. <span class="sig-prename descclassname"><span class="pre">winreg.</span></span><span class="sig-name descname"><span class="pre">SetValueEx</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">key</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">value_name</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">reserved</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">type</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">value</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#winreg.SetValueEx" title="Link to this definition">¶</a></dt>

  597. <dd><p>Stores data in the value field of an open registry key.</p>

  598. <p><em>key</em> is an already open key, or one of the predefined

  599. <a class="reference internal" href="#hkey-constants"><span class="std std-ref">HKEY_* constants</span></a>.</p>

  600. <p><em>value_name</em> is a string that names the subkey with which the value is

  601. associated.</p>

  602. <p><em>reserved</em> can be anything – zero is always passed to the API.</p>

  603. <p><em>type</em> is an integer that specifies the type of the data. See

  604. <a class="reference internal" href="#value-types"><span class="std std-ref">Value Types</span></a> for the available types.</p>

  605. <p><em>value</em> is a string that specifies the new value.</p>

  606. <p>This method can also set additional value and type information for the specified

  607. key.  The key identified by the key parameter must have been opened with

  608. <a class="reference internal" href="#winreg.KEY_SET_VALUE" title="winreg.KEY_SET_VALUE"><code class="xref py py-const docutils literal notranslate"><span class="pre">KEY_SET_VALUE</span></code></a> access.</p>

  609. <p>To open the key, use the <a class="reference internal" href="#winreg.CreateKey" title="winreg.CreateKey"><code class="xref py py-func docutils literal notranslate"><span class="pre">CreateKey()</span></code></a> or <a class="reference internal" href="#winreg.OpenKey" title="winreg.OpenKey"><code class="xref py py-func docutils literal notranslate"><span class="pre">OpenKey()</span></code></a> methods.</p>

  610. <p>Value lengths are limited by available memory. Long values (more than 2048

  611. bytes) should be stored as files with the filenames stored in the configuration

  612. registry.  This helps the registry perform efficiently.</p>

  613. <p class="audit-hook">Raises an <a class="reference internal" href="sys.html#auditing"><span class="std std-ref">auditing event</span></a> <code class="docutils literal notranslate"><span class="pre">winreg.SetValue</span></code> with arguments <code class="docutils literal notranslate"><span class="pre">key</span></code>, <code class="docutils literal notranslate"><span class="pre">sub_key</span></code>, <code class="docutils literal notranslate"><span class="pre">type</span></code>, <code class="docutils literal notranslate"><span class="pre">value</span></code>.</p>

  614. </dd></dl>

  615. 

  616. <dl class="py function">

  617. <dt class="sig sig-object py" id="winreg.DisableReflectionKey">

  618. <span class="sig-prename descclassname"><span class="pre">winreg.</span></span><span class="sig-name descname"><span class="pre">DisableReflectionKey</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">key</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#winreg.DisableReflectionKey" title="Link to this definition">¶</a></dt>

  619. <dd><p>Disables registry reflection for 32-bit processes running on a 64-bit

  620. operating system.</p>

  621. <p><em>key</em> is an already open key, or one of the predefined <a class="reference internal" href="#hkey-constants"><span class="std std-ref">HKEY_* constants</span></a>.</p>

  622. <p>Will generally raise <a class="reference internal" href="exceptions.html#NotImplementedError" title="NotImplementedError"><code class="xref py py-exc docutils literal notranslate"><span class="pre">NotImplementedError</span></code></a> if executed on a 32-bit operating

  623. system.</p>

  624. <p>If the key is not on the reflection list, the function succeeds but has no

  625. effect.  Disabling reflection for a key does not affect reflection of any

  626. subkeys.</p>

  627. <p class="audit-hook">Raises an <a class="reference internal" href="sys.html#auditing"><span class="std std-ref">auditing event</span></a> <code class="docutils literal notranslate"><span class="pre">winreg.DisableReflectionKey</span></code> with argument <code class="docutils literal notranslate"><span class="pre">key</span></code>.</p>

  628. </dd></dl>

  629. 

  630. <dl class="py function">

  631. <dt class="sig sig-object py" id="winreg.EnableReflectionKey">

  632. <span class="sig-prename descclassname"><span class="pre">winreg.</span></span><span class="sig-name descname"><span class="pre">EnableReflectionKey</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">key</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#winreg.EnableReflectionKey" title="Link to this definition">¶</a></dt>

  633. <dd><p>Restores registry reflection for the specified disabled key.</p>

  634. <p><em>key</em> is an already open key, or one of the predefined <a class="reference internal" href="#hkey-constants"><span class="std std-ref">HKEY_* constants</span></a>.</p>

  635. <p>Will generally raise <a class="reference internal" href="exceptions.html#NotImplementedError" title="NotImplementedError"><code class="xref py py-exc docutils literal notranslate"><span class="pre">NotImplementedError</span></code></a> if executed on a 32-bit operating

  636. system.</p>

  637. <p>Restoring reflection for a key does not affect reflection of any subkeys.</p>

  638. <p class="audit-hook">Raises an <a class="reference internal" href="sys.html#auditing"><span class="std std-ref">auditing event</span></a> <code class="docutils literal notranslate"><span class="pre">winreg.EnableReflectionKey</span></code> with argument <code class="docutils literal notranslate"><span class="pre">key</span></code>.</p>

  639. </dd></dl>

  640. 

  641. <dl class="py function">

  642. <dt class="sig sig-object py" id="winreg.QueryReflectionKey">

  643. <span class="sig-prename descclassname"><span class="pre">winreg.</span></span><span class="sig-name descname"><span class="pre">QueryReflectionKey</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">key</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#winreg.QueryReflectionKey" title="Link to this definition">¶</a></dt>

  644. <dd><p>Determines the reflection state for the specified key.</p>

  645. <p><em>key</em> is an already open key, or one of the predefined

  646. <a class="reference internal" href="#hkey-constants"><span class="std std-ref">HKEY_* constants</span></a>.</p>

  647. <p>Returns <code class="docutils literal notranslate"><span class="pre">True</span></code> if reflection is disabled.</p>

  648. <p>Will generally raise <a class="reference internal" href="exceptions.html#NotImplementedError" title="NotImplementedError"><code class="xref py py-exc docutils literal notranslate"><span class="pre">NotImplementedError</span></code></a> if executed on a 32-bit

  649. operating system.</p>

  650. <p class="audit-hook">Raises an <a class="reference internal" href="sys.html#auditing"><span class="std std-ref">auditing event</span></a> <code class="docutils literal notranslate"><span class="pre">winreg.QueryReflectionKey</span></code> with argument <code class="docutils literal notranslate"><span class="pre">key</span></code>.</p>

  651. </dd></dl>

  652. 

  653. </section>

  654. <section id="constants">

  655. <span id="id2"></span><h2>Constants<a class="headerlink" href="#constants" title="Link to this heading">¶</a></h2>

  656. <p>The following constants are defined for use in many <a class="reference internal" href="#module-winreg" title="winreg: Routines and objects for manipulating the Windows registry. (Windows)"><code class="xref py py-mod docutils literal notranslate"><span class="pre">winreg</span></code></a> functions.</p>

  657. <section id="hkey-constants">

  658. <span id="id3"></span><h3>HKEY_* Constants<a class="headerlink" href="#hkey-constants" title="Link to this heading">¶</a></h3>

  659. <dl class="py data">

  660. <dt class="sig sig-object py" id="winreg.HKEY_CLASSES_ROOT">

  661. <span class="sig-prename descclassname"><span class="pre">winreg.</span></span><span class="sig-name descname"><span class="pre">HKEY_CLASSES_ROOT</span></span><a class="headerlink" href="#winreg.HKEY_CLASSES_ROOT" title="Link to this definition">¶</a></dt>

  662. <dd><p>Registry entries subordinate to this key define types (or classes) of

  663. documents and the properties associated with those types. Shell and

  664. COM applications use the information stored under this key.</p>

  665. </dd></dl>

  666. 

  667. <dl class="py data">

  668. <dt class="sig sig-object py" id="winreg.HKEY_CURRENT_USER">

  669. <span class="sig-prename descclassname"><span class="pre">winreg.</span></span><span class="sig-name descname"><span class="pre">HKEY_CURRENT_USER</span></span><a class="headerlink" href="#winreg.HKEY_CURRENT_USER" title="Link to this definition">¶</a></dt>

  670. <dd><p>Registry entries subordinate to this key define the preferences of

  671. the current user. These preferences include the settings of

  672. environment variables, data about program groups, colors, printers,

  673. network connections, and application preferences.</p>

  674. </dd></dl>

  675. 

  676. <dl class="py data">

  677. <dt class="sig sig-object py" id="winreg.HKEY_LOCAL_MACHINE">

  678. <span class="sig-prename descclassname"><span class="pre">winreg.</span></span><span class="sig-name descname"><span class="pre">HKEY_LOCAL_MACHINE</span></span><a class="headerlink" href="#winreg.HKEY_LOCAL_MACHINE" title="Link to this definition">¶</a></dt>

  679. <dd><p>Registry entries subordinate to this key define the physical state

  680. of the computer, including data about the bus type, system memory,

  681. and installed hardware and software.</p>

  682. </dd></dl>

  683. 

  684. <dl class="py data">

  685. <dt class="sig sig-object py" id="winreg.HKEY_USERS">

  686. <span class="sig-prename descclassname"><span class="pre">winreg.</span></span><span class="sig-name descname"><span class="pre">HKEY_USERS</span></span><a class="headerlink" href="#winreg.HKEY_USERS" title="Link to this definition">¶</a></dt>

  687. <dd><p>Registry entries subordinate to this key define the default user

  688. configuration for new users on the local computer and the user

  689. configuration for the current user.</p>

  690. </dd></dl>

  691. 

  692. <dl class="py data">

  693. <dt class="sig sig-object py" id="winreg.HKEY_PERFORMANCE_DATA">

  694. <span class="sig-prename descclassname"><span class="pre">winreg.</span></span><span class="sig-name descname"><span class="pre">HKEY_PERFORMANCE_DATA</span></span><a class="headerlink" href="#winreg.HKEY_PERFORMANCE_DATA" title="Link to this definition">¶</a></dt>

  695. <dd><p>Registry entries subordinate to this key allow you to access

  696. performance data. The data is not actually stored in the registry;

  697. the registry functions cause the system to collect the data from

  698. its source.</p>

  699. </dd></dl>

  700. 

  701. <dl class="py data">

  702. <dt class="sig sig-object py" id="winreg.HKEY_CURRENT_CONFIG">

  703. <span class="sig-prename descclassname"><span class="pre">winreg.</span></span><span class="sig-name descname"><span class="pre">HKEY_CURRENT_CONFIG</span></span><a class="headerlink" href="#winreg.HKEY_CURRENT_CONFIG" title="Link to this definition">¶</a></dt>

  704. <dd><p>Contains information about the current hardware profile of the

  705. local computer system.</p>

  706. </dd></dl>

  707. 

  708. <dl class="py data">

  709. <dt class="sig sig-object py" id="winreg.HKEY_DYN_DATA">

  710. <span class="sig-prename descclassname"><span class="pre">winreg.</span></span><span class="sig-name descname"><span class="pre">HKEY_DYN_DATA</span></span><a class="headerlink" href="#winreg.HKEY_DYN_DATA" title="Link to this definition">¶</a></dt>

  711. <dd><p>This key is not used in versions of Windows after 98.</p>

  712. </dd></dl>

  713. 

  714. </section>

  715. <section id="access-rights">

  716. <span id="id4"></span><h3>Access Rights<a class="headerlink" href="#access-rights" title="Link to this heading">¶</a></h3>

  717. <p>For more information, see <a class="reference external" href="https://msdn.microsoft.com/en-us/library/ms724878%28v=VS.85%29.aspx">Registry Key Security and Access</a>.</p>

  718. <dl class="py data">

  719. <dt class="sig sig-object py" id="winreg.KEY_ALL_ACCESS">

  720. <span class="sig-prename descclassname"><span class="pre">winreg.</span></span><span class="sig-name descname"><span class="pre">KEY_ALL_ACCESS</span></span><a class="headerlink" href="#winreg.KEY_ALL_ACCESS" title="Link to this definition">¶</a></dt>

  721. <dd><p>Combines the STANDARD_RIGHTS_REQUIRED, <a class="reference internal" href="#winreg.KEY_QUERY_VALUE" title="winreg.KEY_QUERY_VALUE"><code class="xref py py-const docutils literal notranslate"><span class="pre">KEY_QUERY_VALUE</span></code></a>,

  722. <a class="reference internal" href="#winreg.KEY_SET_VALUE" title="winreg.KEY_SET_VALUE"><code class="xref py py-const docutils literal notranslate"><span class="pre">KEY_SET_VALUE</span></code></a>, <a class="reference internal" href="#winreg.KEY_CREATE_SUB_KEY" title="winreg.KEY_CREATE_SUB_KEY"><code class="xref py py-const docutils literal notranslate"><span class="pre">KEY_CREATE_SUB_KEY</span></code></a>,

  723. <a class="reference internal" href="#winreg.KEY_ENUMERATE_SUB_KEYS" title="winreg.KEY_ENUMERATE_SUB_KEYS"><code class="xref py py-const docutils literal notranslate"><span class="pre">KEY_ENUMERATE_SUB_KEYS</span></code></a>, <a class="reference internal" href="#winreg.KEY_NOTIFY" title="winreg.KEY_NOTIFY"><code class="xref py py-const docutils literal notranslate"><span class="pre">KEY_NOTIFY</span></code></a>,

  724. and <a class="reference internal" href="#winreg.KEY_CREATE_LINK" title="winreg.KEY_CREATE_LINK"><code class="xref py py-const docutils literal notranslate"><span class="pre">KEY_CREATE_LINK</span></code></a> access rights.</p>

  725. </dd></dl>

  726. 

  727. <dl class="py data">

  728. <dt class="sig sig-object py" id="winreg.KEY_WRITE">

  729. <span class="sig-prename descclassname"><span class="pre">winreg.</span></span><span class="sig-name descname"><span class="pre">KEY_WRITE</span></span><a class="headerlink" href="#winreg.KEY_WRITE" title="Link to this definition">¶</a></dt>

  730. <dd><p>Combines the STANDARD_RIGHTS_WRITE, <a class="reference internal" href="#winreg.KEY_SET_VALUE" title="winreg.KEY_SET_VALUE"><code class="xref py py-const docutils literal notranslate"><span class="pre">KEY_SET_VALUE</span></code></a>, and

  731. <a class="reference internal" href="#winreg.KEY_CREATE_SUB_KEY" title="winreg.KEY_CREATE_SUB_KEY"><code class="xref py py-const docutils literal notranslate"><span class="pre">KEY_CREATE_SUB_KEY</span></code></a> access rights.</p>

  732. </dd></dl>

  733. 

  734. <dl class="py data">

  735. <dt class="sig sig-object py" id="winreg.KEY_READ">

  736. <span class="sig-prename descclassname"><span class="pre">winreg.</span></span><span class="sig-name descname"><span class="pre">KEY_READ</span></span><a class="headerlink" href="#winreg.KEY_READ" title="Link to this definition">¶</a></dt>

  737. <dd><p>Combines the STANDARD_RIGHTS_READ, <a class="reference internal" href="#winreg.KEY_QUERY_VALUE" title="winreg.KEY_QUERY_VALUE"><code class="xref py py-const docutils literal notranslate"><span class="pre">KEY_QUERY_VALUE</span></code></a>,

  738. <a class="reference internal" href="#winreg.KEY_ENUMERATE_SUB_KEYS" title="winreg.KEY_ENUMERATE_SUB_KEYS"><code class="xref py py-const docutils literal notranslate"><span class="pre">KEY_ENUMERATE_SUB_KEYS</span></code></a>, and <a class="reference internal" href="#winreg.KEY_NOTIFY" title="winreg.KEY_NOTIFY"><code class="xref py py-const docutils literal notranslate"><span class="pre">KEY_NOTIFY</span></code></a> values.</p>

  739. </dd></dl>

  740. 

  741. <dl class="py data">

  742. <dt class="sig sig-object py" id="winreg.KEY_EXECUTE">

  743. <span class="sig-prename descclassname"><span class="pre">winreg.</span></span><span class="sig-name descname"><span class="pre">KEY_EXECUTE</span></span><a class="headerlink" href="#winreg.KEY_EXECUTE" title="Link to this definition">¶</a></dt>

  744. <dd><p>Equivalent to <a class="reference internal" href="#winreg.KEY_READ" title="winreg.KEY_READ"><code class="xref py py-const docutils literal notranslate"><span class="pre">KEY_READ</span></code></a>.</p>

  745. </dd></dl>

  746. 

  747. <dl class="py data">

  748. <dt class="sig sig-object py" id="winreg.KEY_QUERY_VALUE">

  749. <span class="sig-prename descclassname"><span class="pre">winreg.</span></span><span class="sig-name descname"><span class="pre">KEY_QUERY_VALUE</span></span><a class="headerlink" href="#winreg.KEY_QUERY_VALUE" title="Link to this definition">¶</a></dt>

  750. <dd><p>Required to query the values of a registry key.</p>

  751. </dd></dl>

  752. 

  753. <dl class="py data">

  754. <dt class="sig sig-object py" id="winreg.KEY_SET_VALUE">

  755. <span class="sig-prename descclassname"><span class="pre">winreg.</span></span><span class="sig-name descname"><span class="pre">KEY_SET_VALUE</span></span><a class="headerlink" href="#winreg.KEY_SET_VALUE" title="Link to this definition">¶</a></dt>

  756. <dd><p>Required to create, delete, or set a registry value.</p>

  757. </dd></dl>

  758. 

  759. <dl class="py data">

  760. <dt class="sig sig-object py" id="winreg.KEY_CREATE_SUB_KEY">

  761. <span class="sig-prename descclassname"><span class="pre">winreg.</span></span><span class="sig-name descname"><span class="pre">KEY_CREATE_SUB_KEY</span></span><a class="headerlink" href="#winreg.KEY_CREATE_SUB_KEY" title="Link to this definition">¶</a></dt>

  762. <dd><p>Required to create a subkey of a registry key.</p>

  763. </dd></dl>

  764. 

  765. <dl class="py data">

  766. <dt class="sig sig-object py" id="winreg.KEY_ENUMERATE_SUB_KEYS">

  767. <span class="sig-prename descclassname"><span class="pre">winreg.</span></span><span class="sig-name descname"><span class="pre">KEY_ENUMERATE_SUB_KEYS</span></span><a class="headerlink" href="#winreg.KEY_ENUMERATE_SUB_KEYS" title="Link to this definition">¶</a></dt>

  768. <dd><p>Required to enumerate the subkeys of a registry key.</p>

  769. </dd></dl>

  770. 

  771. <dl class="py data">

  772. <dt class="sig sig-object py" id="winreg.KEY_NOTIFY">

  773. <span class="sig-prename descclassname"><span class="pre">winreg.</span></span><span class="sig-name descname"><span class="pre">KEY_NOTIFY</span></span><a class="headerlink" href="#winreg.KEY_NOTIFY" title="Link to this definition">¶</a></dt>

  774. <dd><p>Required to request change notifications for a registry key or for

  775. subkeys of a registry key.</p>

  776. </dd></dl>

  777. 

  778. <dl class="py data">

  779. <dt class="sig sig-object py" id="winreg.KEY_CREATE_LINK">

  780. <span class="sig-prename descclassname"><span class="pre">winreg.</span></span><span class="sig-name descname"><span class="pre">KEY_CREATE_LINK</span></span><a class="headerlink" href="#winreg.KEY_CREATE_LINK" title="Link to this definition">¶</a></dt>

  781. <dd><p>Reserved for system use.</p>

  782. </dd></dl>

  783. 

  784. <section id="bit-specific">

  785. <span id="bit-access-rights"></span><h4>64-bit Specific<a class="headerlink" href="#bit-specific" title="Link to this heading">¶</a></h4>

  786. <p>For more information, see <a class="reference external" href="https://msdn.microsoft.com/en-us/library/aa384129(v=VS.85).aspx">Accessing an Alternate Registry View</a>.</p>

  787. <dl class="py data">

  788. <dt class="sig sig-object py" id="winreg.KEY_WOW64_64KEY">

  789. <span class="sig-prename descclassname"><span class="pre">winreg.</span></span><span class="sig-name descname"><span class="pre">KEY_WOW64_64KEY</span></span><a class="headerlink" href="#winreg.KEY_WOW64_64KEY" title="Link to this definition">¶</a></dt>

  790. <dd><p>Indicates that an application on 64-bit Windows should operate on

  791. the 64-bit registry view. On 32-bit Windows, this constant is ignored.</p>

  792. </dd></dl>

  793. 

  794. <dl class="py data">

  795. <dt class="sig sig-object py" id="winreg.KEY_WOW64_32KEY">

  796. <span class="sig-prename descclassname"><span class="pre">winreg.</span></span><span class="sig-name descname"><span class="pre">KEY_WOW64_32KEY</span></span><a class="headerlink" href="#winreg.KEY_WOW64_32KEY" title="Link to this definition">¶</a></dt>

  797. <dd><p>Indicates that an application on 64-bit Windows should operate on

  798. the 32-bit registry view. On 32-bit Windows, this constant is ignored.</p>

  799. </dd></dl>

  800. 

  801. </section>

  802. </section>

  803. <section id="value-types">

  804. <span id="id5"></span><h3>Value Types<a class="headerlink" href="#value-types" title="Link to this heading">¶</a></h3>

  805. <p>For more information, see <a class="reference external" href="https://msdn.microsoft.com/en-us/library/ms724884%28v=VS.85%29.aspx">Registry Value Types</a>.</p>

  806. <dl class="py data">

  807. <dt class="sig sig-object py" id="winreg.REG_BINARY">

  808. <span class="sig-prename descclassname"><span class="pre">winreg.</span></span><span class="sig-name descname"><span class="pre">REG_BINARY</span></span><a class="headerlink" href="#winreg.REG_BINARY" title="Link to this definition">¶</a></dt>

  809. <dd><p>Binary data in any form.</p>

  810. </dd></dl>

  811. 

  812. <dl class="py data">

  813. <dt class="sig sig-object py" id="winreg.REG_DWORD">

  814. <span class="sig-prename descclassname"><span class="pre">winreg.</span></span><span class="sig-name descname"><span class="pre">REG_DWORD</span></span><a class="headerlink" href="#winreg.REG_DWORD" title="Link to this definition">¶</a></dt>

  815. <dd><p>32-bit number.</p>

  816. </dd></dl>

  817. 

  818. <dl class="py data">

  819. <dt class="sig sig-object py" id="winreg.REG_DWORD_LITTLE_ENDIAN">

  820. <span class="sig-prename descclassname"><span class="pre">winreg.</span></span><span class="sig-name descname"><span class="pre">REG_DWORD_LITTLE_ENDIAN</span></span><a class="headerlink" href="#winreg.REG_DWORD_LITTLE_ENDIAN" title="Link to this definition">¶</a></dt>

  821. <dd><p>A 32-bit number in little-endian format. Equivalent to <a class="reference internal" href="#winreg.REG_DWORD" title="winreg.REG_DWORD"><code class="xref py py-const docutils literal notranslate"><span class="pre">REG_DWORD</span></code></a>.</p>

  822. </dd></dl>

  823. 

  824. <dl class="py data">

  825. <dt class="sig sig-object py" id="winreg.REG_DWORD_BIG_ENDIAN">

  826. <span class="sig-prename descclassname"><span class="pre">winreg.</span></span><span class="sig-name descname"><span class="pre">REG_DWORD_BIG_ENDIAN</span></span><a class="headerlink" href="#winreg.REG_DWORD_BIG_ENDIAN" title="Link to this definition">¶</a></dt>

  827. <dd><p>A 32-bit number in big-endian format.</p>

  828. </dd></dl>

  829. 

  830. <dl class="py data">

  831. <dt class="sig sig-object py" id="winreg.REG_EXPAND_SZ">

  832. <span class="sig-prename descclassname"><span class="pre">winreg.</span></span><span class="sig-name descname"><span class="pre">REG_EXPAND_SZ</span></span><a class="headerlink" href="#winreg.REG_EXPAND_SZ" title="Link to this definition">¶</a></dt>

  833. <dd><p>Null-terminated string containing references to environment

  834. variables (<code class="docutils literal notranslate"><span class="pre">%PATH%</span></code>).</p>

  835. </dd></dl>

  836. 

  837. <dl class="py data">

  838. <dt class="sig sig-object py" id="winreg.REG_LINK">

  839. <span class="sig-prename descclassname"><span class="pre">winreg.</span></span><span class="sig-name descname"><span class="pre">REG_LINK</span></span><a class="headerlink" href="#winreg.REG_LINK" title="Link to this definition">¶</a></dt>

  840. <dd><p>A Unicode symbolic link.</p>

  841. </dd></dl>

  842. 

  843. <dl class="py data">

  844. <dt class="sig sig-object py" id="winreg.REG_MULTI_SZ">

  845. <span class="sig-prename descclassname"><span class="pre">winreg.</span></span><span class="sig-name descname"><span class="pre">REG_MULTI_SZ</span></span><a class="headerlink" href="#winreg.REG_MULTI_SZ" title="Link to this definition">¶</a></dt>

  846. <dd><p>A sequence of null-terminated strings, terminated by two null characters.

  847. (Python handles this termination automatically.)</p>

  848. </dd></dl>

  849. 

  850. <dl class="py data">

  851. <dt class="sig sig-object py" id="winreg.REG_NONE">

  852. <span class="sig-prename descclassname"><span class="pre">winreg.</span></span><span class="sig-name descname"><span class="pre">REG_NONE</span></span><a class="headerlink" href="#winreg.REG_NONE" title="Link to this definition">¶</a></dt>

  853. <dd><p>No defined value type.</p>

  854. </dd></dl>

  855. 

  856. <dl class="py data">

  857. <dt class="sig sig-object py" id="winreg.REG_QWORD">

  858. <span class="sig-prename descclassname"><span class="pre">winreg.</span></span><span class="sig-name descname"><span class="pre">REG_QWORD</span></span><a class="headerlink" href="#winreg.REG_QWORD" title="Link to this definition">¶</a></dt>

  859. <dd><p>A 64-bit number.</p>

  860. <div class="versionadded">

  861. <p><span class="versionmodified added">New in version 3.6.</span></p>

  862. </div>

  863. </dd></dl>

  864. 

  865. <dl class="py data">

  866. <dt class="sig sig-object py" id="winreg.REG_QWORD_LITTLE_ENDIAN">

  867. <span class="sig-prename descclassname"><span class="pre">winreg.</span></span><span class="sig-name descname"><span class="pre">REG_QWORD_LITTLE_ENDIAN</span></span><a class="headerlink" href="#winreg.REG_QWORD_LITTLE_ENDIAN" title="Link to this definition">¶</a></dt>

  868. <dd><p>A 64-bit number in little-endian format. Equivalent to <a class="reference internal" href="#winreg.REG_QWORD" title="winreg.REG_QWORD"><code class="xref py py-const docutils literal notranslate"><span class="pre">REG_QWORD</span></code></a>.</p>

  869. <div class="versionadded">

  870. <p><span class="versionmodified added">New in version 3.6.</span></p>

  871. </div>

  872. </dd></dl>

  873. 

  874. <dl class="py data">

  875. <dt class="sig sig-object py" id="winreg.REG_RESOURCE_LIST">

  876. <span class="sig-prename descclassname"><span class="pre">winreg.</span></span><span class="sig-name descname"><span class="pre">REG_RESOURCE_LIST</span></span><a class="headerlink" href="#winreg.REG_RESOURCE_LIST" title="Link to this definition">¶</a></dt>

  877. <dd><p>A device-driver resource list.</p>

  878. </dd></dl>

  879. 

  880. <dl class="py data">

  881. <dt class="sig sig-object py" id="winreg.REG_FULL_RESOURCE_DESCRIPTOR">

  882. <span class="sig-prename descclassname"><span class="pre">winreg.</span></span><span class="sig-name descname"><span class="pre">REG_FULL_RESOURCE_DESCRIPTOR</span></span><a class="headerlink" href="#winreg.REG_FULL_RESOURCE_DESCRIPTOR" title="Link to this definition">¶</a></dt>

  883. <dd><p>A hardware setting.</p>

  884. </dd></dl>

  885. 

  886. <dl class="py data">

  887. <dt class="sig sig-object py" id="winreg.REG_RESOURCE_REQUIREMENTS_LIST">

  888. <span class="sig-prename descclassname"><span class="pre">winreg.</span></span><span class="sig-name descname"><span class="pre">REG_RESOURCE_REQUIREMENTS_LIST</span></span><a class="headerlink" href="#winreg.REG_RESOURCE_REQUIREMENTS_LIST" title="Link to this definition">¶</a></dt>

  889. <dd><p>A hardware resource list.</p>

  890. </dd></dl>

  891. 

  892. <dl class="py data">

  893. <dt class="sig sig-object py" id="winreg.REG_SZ">

  894. <span class="sig-prename descclassname"><span class="pre">winreg.</span></span><span class="sig-name descname"><span class="pre">REG_SZ</span></span><a class="headerlink" href="#winreg.REG_SZ" title="Link to this definition">¶</a></dt>

  895. <dd><p>A null-terminated string.</p>

  896. </dd></dl>

  897. 

  898. </section>

  899. </section>

  900. <section id="registry-handle-objects">

  901. <span id="handle-object"></span><h2>Registry Handle Objects<a class="headerlink" href="#registry-handle-objects" title="Link to this heading">¶</a></h2>

  902. <p>This object wraps a Windows HKEY object, automatically closing it when the

  903. object is destroyed.  To guarantee cleanup, you can call either the

  904. <a class="reference internal" href="#winreg.PyHKEY.Close" title="winreg.PyHKEY.Close"><code class="xref py py-meth docutils literal notranslate"><span class="pre">Close()</span></code></a> method on the object, or the <a class="reference internal" href="#winreg.CloseKey" title="winreg.CloseKey"><code class="xref py py-func docutils literal notranslate"><span class="pre">CloseKey()</span></code></a> function.</p>

  905. <p>All registry functions in this module return one of these objects.</p>

  906. <p>All registry functions in this module which accept a handle object also accept

  907. an integer, however, use of the handle object is encouraged.</p>

  908. <p>Handle objects provide semantics for <a class="reference internal" href="../reference/datamodel.html#object.__bool__" title="object.__bool__"><code class="xref py py-meth docutils literal notranslate"><span class="pre">__bool__()</span></code></a> – thus</p>

  909. <div class="highlight-python3 notranslate"><div class="highlight"><pre><span></span><span class="k">if</span> <span class="n">handle</span><span class="p">:</span>

  910.     <span class="nb">print</span><span class="p">(</span><span class="s2">&quot;Yes&quot;</span><span class="p">)</span>

  911. </pre></div>

  912. </div>

  913. <p>will print <code class="docutils literal notranslate"><span class="pre">Yes</span></code> if the handle is currently valid (has not been closed or

  914. detached).</p>

  915. <p>The object also support comparison semantics, so handle objects will compare

  916. true if they both reference the same underlying Windows handle value.</p>

  917. <p>Handle objects can be converted to an integer (e.g., using the built-in

  918. <a class="reference internal" href="functions.html#int" title="int"><code class="xref py py-func docutils literal notranslate"><span class="pre">int()</span></code></a> function), in which case the underlying Windows handle value is

  919. returned.  You can also use the <a class="reference internal" href="#winreg.PyHKEY.Detach" title="winreg.PyHKEY.Detach"><code class="xref py py-meth docutils literal notranslate"><span class="pre">Detach()</span></code></a> method to return the

  920. integer handle, and also disconnect the Windows handle from the handle object.</p>

  921. <dl class="py method">

  922. <dt class="sig sig-object py" id="winreg.PyHKEY.Close">

  923. <span class="sig-prename descclassname"><span class="pre">PyHKEY.</span></span><span class="sig-name descname"><span class="pre">Close</span></span><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#winreg.PyHKEY.Close" title="Link to this definition">¶</a></dt>

  924. <dd><p>Closes the underlying Windows handle.</p>

  925. <p>If the handle is already closed, no error is raised.</p>

  926. </dd></dl>

  927. 

  928. <dl class="py method">

  929. <dt class="sig sig-object py" id="winreg.PyHKEY.Detach">

  930. <span class="sig-prename descclassname"><span class="pre">PyHKEY.</span></span><span class="sig-name descname"><span class="pre">Detach</span></span><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#winreg.PyHKEY.Detach" title="Link to this definition">¶</a></dt>

  931. <dd><p>Detaches the Windows handle from the handle object.</p>

  932. <p>The result is an integer that holds the value of the handle before it is

  933. detached.  If the handle is already detached or closed, this will return

  934. zero.</p>

  935. <p>After calling this function, the handle is effectively invalidated, but the

  936. handle is not closed.  You would call this function when you need the

  937. underlying Win32 handle to exist beyond the lifetime of the handle object.</p>

  938. <p class="audit-hook">Raises an <a class="reference internal" href="sys.html#auditing"><span class="std std-ref">auditing event</span></a> <code class="docutils literal notranslate"><span class="pre">winreg.PyHKEY.Detach</span></code> with argument <code class="docutils literal notranslate"><span class="pre">key</span></code>.</p>

  939. </dd></dl>

  940. 

  941. <dl class="py method">

  942. <dt class="sig sig-object py" id="winreg.PyHKEY.__enter__">

  943. <span class="sig-prename descclassname"><span class="pre">PyHKEY.</span></span><span class="sig-name descname"><span class="pre">__enter__</span></span><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#winreg.PyHKEY.__enter__" title="Link to this definition">¶</a></dt>

  944. <dt class="sig sig-object py" id="winreg.PyHKEY.__exit__">

  945. <span class="sig-prename descclassname"><span class="pre">PyHKEY.</span></span><span class="sig-name descname"><span class="pre">__exit__</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="o"><span class="pre">*</span></span><span class="n"><span class="pre">exc_info</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#winreg.PyHKEY.__exit__" title="Link to this definition">¶</a></dt>

  946. <dd><p>The HKEY object implements <a class="reference internal" href="../reference/datamodel.html#object.__enter__" title="object.__enter__"><code class="xref py py-meth docutils literal notranslate"><span class="pre">__enter__()</span></code></a> and

  947. <a class="reference internal" href="../reference/datamodel.html#object.__exit__" title="object.__exit__"><code class="xref py py-meth docutils literal notranslate"><span class="pre">__exit__()</span></code></a> and thus supports the context protocol for the

  948. <a class="reference internal" href="../reference/compound_stmts.html#with"><code class="xref std std-keyword docutils literal notranslate"><span class="pre">with</span></code></a> statement:</p>

  949. <div class="highlight-python3 notranslate"><div class="highlight"><pre><span></span><span class="k">with</span> <span class="n">OpenKey</span><span class="p">(</span><span class="n">HKEY_LOCAL_MACHINE</span><span class="p">,</span> <span class="s2">&quot;foo&quot;</span><span class="p">)</span> <span class="k">as</span> <span class="n">key</span><span class="p">:</span>

  950.     <span class="o">...</span>  <span class="c1"># work with key</span>

  951. </pre></div>

  952. </div>

  953. <p>will automatically close <em>key</em> when control leaves the <a class="reference internal" href="../reference/compound_stmts.html#with"><code class="xref std std-keyword docutils literal notranslate"><span class="pre">with</span></code></a> block.</p>

  954. </dd></dl>

  955. 

  956. </section>

  957. </section>

  958. 

  959. 

  960.             <div class="clearer"></div>

  961.           </div>

  962.         </div>

  963.       </div>

  964.       <div class="sphinxsidebar" role="navigation" aria-label="main navigation">

  965.         <div class="sphinxsidebarwrapper">

  966.   <div>

  967.     <h3><a href="../contents.html">Table of Contents</a></h3>

  968.     <ul>

  969. <li><a class="reference internal" href="#"><code class="xref py py-mod docutils literal notranslate"><span class="pre">winreg</span></code> — Windows registry access</a><ul>

  970. <li><a class="reference internal" href="#functions">Functions</a></li>

  971. <li><a class="reference internal" href="#constants">Constants</a><ul>

  972. <li><a class="reference internal" href="#hkey-constants">HKEY_* Constants</a></li>

  973. <li><a class="reference internal" href="#access-rights">Access Rights</a><ul>

  974. <li><a class="reference internal" href="#bit-specific">64-bit Specific</a></li>

  975. </ul>

  976. </li>

  977. <li><a class="reference internal" href="#value-types">Value Types</a></li>

  978. </ul>

  979. </li>

  980. <li><a class="reference internal" href="#registry-handle-objects">Registry Handle Objects</a></li>

  981. </ul>

  982. </li>

  983. </ul>

  984. 

  985.   </div>

  986.   <div>

  987.     <h4>Previous topic</h4>

  988.     <p class="topless"><a href="msvcrt.html"

  989.                           title="previous chapter"><code class="xref py py-mod docutils literal notranslate"><span class="pre">msvcrt</span></code> — Useful routines from the MS VC++ runtime</a></p>

  990.   </div>

  991.   <div>

  992.     <h4>Next topic</h4>

  993.     <p class="topless"><a href="winsound.html"

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  997.     <h3>This Page</h3>

  998.     <ul class="this-page-menu">

  999.       <li><a href="../bugs.html">Report a Bug</a></li>

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