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<!DOCTYPE html>

<head>

<title>Python Initialization Configuration — Python 3.11.5 belgelendirmesi</title><meta name="viewport" content="width=device-width, initial-scale=1.0">

title="Python 3.11.5 belgelendirmesi içinde ara"

href="../_static/opensearch.xml"/>

<style>

@media only screen {

table.full-width-table {

width: 100%;

}

</style>

</head>

<body>

<input type="checkbox" id="menuToggler" class="toggler__input" aria-controls="navigation"

aria-pressed="false" aria-expanded="false" role="button" aria-label="Menu" />

</label>

</a>

</svg>

</form>

</nav>

Theme

<option value="light">Light</option>

</select>

</label>

<div>

<h3><a href="../contents.html">İçindekiler</a></h3>

<ul>

<li><a class="reference internal" href="#">Python Initialization Configuration</a><ul>

<li><a class="reference internal" href="#example">Example</a></li>

<li><a class="reference internal" href="#pywidestringlist">PyWideStringList</a></li>

<li><a class="reference internal" href="#pystatus">PyStatus</a></li>

<li><a class="reference internal" href="#pypreconfig">PyPreConfig</a></li>

<li><a class="reference internal" href="#preinitialize-python-with-pypreconfig">Preinitialize Python with PyPreConfig</a></li>

<li><a class="reference internal" href="#pyconfig">PyConfig</a></li>

<li><a class="reference internal" href="#initialization-with-pyconfig">Initialization with PyConfig</a></li>

<li><a class="reference internal" href="#isolated-configuration">Isolated Configuration</a></li>

<li><a class="reference internal" href="#python-configuration">Python Configuration</a></li>

<li><a class="reference internal" href="#python-path-configuration">Python Path Configuration</a></li>

<li><a class="reference internal" href="#py-runmain">Py_RunMain()</a></li>

<li><a class="reference internal" href="#py-getargcargv">Py_GetArgcArgv()</a></li>

<li><a class="reference internal" href="#multi-phase-initialization-private-provisional-api">Multi-Phase Initialization Private Provisional API</a></li>

</ul>

</li>

</ul>

</div>

<div>

<h4>Önceki konu</h4>

<a href="init.html"

title="önceki bölüm">Initialization, Finalization, and Threads</a>

</div>

<div>

<h4>Sonraki konu</h4>

<a href="memory.html"

title="sonraki bölüm">Memory Management</a>

</div>

<h3>Bu Sayfa</h3>

<li><a href="../bugs.html">Hata Bildir</a></li>

<li>

<a href="https://github.com/python/cpython/blob/3.11/Doc/c-api/init_config.rst"

rel="nofollow">Kaynağı Göster

</a>

</li>

</ul>

</div>

</nav>

</div>

<h3>Gezinti</h3>

<ul>

<a href="../genindex.html" title="Genel Endeks"

accesskey="I">dizin</a></li>

<a href="../py-modindex.html" title="Python Modül Dizini"

>modülleri</a> |</li>

<a href="memory.html" title="Memory Management"

accesskey="N">sonraki</a> |</li>

<a href="init.html" title="Initialization, Finalization, and Threads"

accesskey="P">önceki</a> |</li>

<li><a href="https://www.python.org/">Python</a> »</li>

</li>

<li>

</li>

<a href="../index.html">3.11.5 Documentation</a> »

</li>

<li class="nav-item nav-item-1"><a href="index.html" accesskey="U">Python/C API Referans Kılavuzu</a> »</li>

<li class="nav-item nav-item-this"><a href="">Python Initialization Configuration</a></li>

</form>

</div>

</li>

Theme

<option value="light">Light</option>

</select>

</label> |</li>

</ul>

</div>

<h1>Python Initialization Configuration<a class="headerlink" href="#python-initialization-configuration" title="Permalink to this heading">¶</a></h1>

3.8 sürümünde geldi.

</div>

Python can be initialized with <a class="reference internal" href="#c.Py_InitializeFromConfig" title="Py_InitializeFromConfig"><code class="xref c c-func docutils literal notranslate">Py_InitializeFromConfig()</code></a> and the

<a class="reference internal" href="#c.PyConfig" title="PyConfig"><code class="xref c c-type docutils literal notranslate">PyConfig</code></a> structure. It can be preinitialized with

<a class="reference internal" href="#c.Py_PreInitialize" title="Py_PreInitialize"><code class="xref c c-func docutils literal notranslate">Py_PreInitialize()</code></a> and the <a class="reference internal" href="#c.PyPreConfig" title="PyPreConfig"><code class="xref c c-type docutils literal notranslate">PyPreConfig</code></a> structure.

There are two kinds of configuration:

<li>The <a class="reference internal" href="#init-python-config">Python Configuration</a> can be used to build a

customized Python which behaves as the regular Python. For example,

environment variables and command line arguments are used to configure

Python.</li>

<li>The <a class="reference internal" href="#init-isolated-conf">Isolated Configuration</a> can be used to embed

Python into an application. It isolates Python from the system. For example,

environment variables are ignored, the LC_CTYPE locale is left unchanged and

no signal handler is registered.</li>

</ul>

The <a class="reference internal" href="#c.Py_RunMain" title="Py_RunMain"><code class="xref c c-func docutils literal notranslate">Py_RunMain()</code></a> function can be used to write a customized Python

program.

See also <a class="reference internal" href="init.html#initialization">Initialization, Finalization, and Threads</a>.

Ayrıca bakınız

<a class="pep reference external" href="https://peps.python.org/pep-0587/">PEP 587</a> “Python Initialization Configuration”.

</div>

<h2>Example<a class="headerlink" href="#example" title="Permalink to this heading">¶</a></h2>

Example of customized Python always running in isolated mode:

<div class="highlight-c notranslate"><div class="highlight"><pre>int main(int argc, char **argv)

{

PyStatus status;

PyConfig config;

PyConfig_InitPythonConfig(&config);

config.isolated = 1;

/* Decode command line arguments.

Implicitly preinitialize Python (in isolated mode). */

status = PyConfig_SetBytesArgv(&config, argc, argv);

if (PyStatus_Exception(status)) {

goto exception;

}

status = Py_InitializeFromConfig(&config);

goto exception;

}

PyConfig_Clear(&config);

return Py_RunMain();

exception:

PyConfig_Clear(&config);

if (PyStatus_IsExit(status)) {

return status.exitcode;

}

/* Display the error message and exit the process with

non-zero exit code */

Py_ExitStatusException(status);

}

</pre></div>

</div>

</section>

<h2>PyWideStringList<a class="headerlink" href="#pywidestringlist" title="Permalink to this heading">¶</a></h2>

type PyWideStringList<a class="headerlink" href="#c.PyWideStringList" title="Bu tanım için kalıcı bağlantı">¶</a> </dt>

<dd>List of <code class="docutils literal notranslate">wchar_t*</code> strings.

If length is non-zero, items must be non-<code class="docutils literal notranslate">NULL</code> and all strings must be

non-<code class="docutils literal notranslate">NULL</code>.

Methods:

<dd>Append item to list.

Python must be preinitialized to call this function.

</dd></dl>

<a class="reference internal" href="#c.PyStatus" title="PyStatus">PyStatus</a> PyWideStringList_Insert(<a class="reference internal" href="#c.PyWideStringList" title="PyWideStringList">PyWideStringList</a> *list, <a class="reference internal" href="intro.html#c.Py_ssize_t" title="Py_ssize_t">Py_ssize_t</a> index, const wchar_t *item)<a class="headerlink" href="#c.PyWideStringList_Insert" title="Bu tanım için kalıcı bağlantı">¶</a> </dt>

<dd>Insert item into list at index.

If index is greater than or equal to list length, append item to

list.

index must be greater than or equal to <code class="docutils literal notranslate">0</code>.

Python must be preinitialized to call this function.

</dd></dl>

Structure fields:

<a class="reference internal" href="intro.html#c.Py_ssize_t" title="Py_ssize_t">Py_ssize_t</a> length<a class="headerlink" href="#c.PyWideStringList.length" title="Bu tanım için kalıcı bağlantı">¶</a> </dt>

<dd>List length.

</dd></dl>

wchar_t **items<a class="headerlink" href="#c.PyWideStringList.items" title="Bu tanım için kalıcı bağlantı">¶</a> </dt>

<dd>List items.

</dd></dl>

</section>

<h2>PyStatus<a class="headerlink" href="#pystatus" title="Permalink to this heading">¶</a></h2>

type PyStatus<a class="headerlink" href="#c.PyStatus" title="Bu tanım için kalıcı bağlantı">¶</a> </dt>

<dd>Structure to store an initialization function status: success, error

or exit.

For an error, it can store the C function name which created the error.

Structure fields:

int exitcode<a class="headerlink" href="#c.PyStatus.exitcode" title="Bu tanım için kalıcı bağlantı">¶</a> </dt>

<dd>Exit code. Argument passed to <code class="docutils literal notranslate">exit()</code>.

</dd></dl>

const char *err_msg<a class="headerlink" href="#c.PyStatus.err_msg" title="Bu tanım için kalıcı bağlantı">¶</a> </dt>

<dd>Error message.

</dd></dl>

const char *func<a class="headerlink" href="#c.PyStatus.func" title="Bu tanım için kalıcı bağlantı">¶</a> </dt>

<dd>Name of the function which created an error, can be <code class="docutils literal notranslate">NULL</code>.

</dd></dl>

Functions to create a status:

<dd>Success.

</dd></dl>

<dd>Initialization error with a message.

err_msg must not be <code class="docutils literal notranslate">NULL</code>.

</dd></dl>

<dd>Memory allocation failure (out of memory).

</dd></dl>

<dd>Exit Python with the specified exit code.

</dd></dl>

Functions to handle a status:

int PyStatus_Exception(<a class="reference internal" href="#c.PyStatus" title="PyStatus">PyStatus</a> status)<a class="headerlink" href="#c.PyStatus_Exception" title="Bu tanım için kalıcı bağlantı">¶</a> </dt>

<dd>Is the status an error or an exit? If true, the exception must be

handled; by calling <a class="reference internal" href="#c.Py_ExitStatusException" title="Py_ExitStatusException"><code class="xref c c-func docutils literal notranslate">Py_ExitStatusException()</code></a> for example.

</dd></dl>

int PyStatus_IsError(<a class="reference internal" href="#c.PyStatus" title="PyStatus">PyStatus</a> status)<a class="headerlink" href="#c.PyStatus_IsError" title="Bu tanım için kalıcı bağlantı">¶</a> </dt>

<dd>Is the result an error?

</dd></dl>

int PyStatus_IsExit(<a class="reference internal" href="#c.PyStatus" title="PyStatus">PyStatus</a> status)<a class="headerlink" href="#c.PyStatus_IsExit" title="Bu tanım için kalıcı bağlantı">¶</a> </dt>

<dd>Is the result an exit?

</dd></dl>

void Py_ExitStatusException(<a class="reference internal" href="#c.PyStatus" title="PyStatus">PyStatus</a> status)<a class="headerlink" href="#c.Py_ExitStatusException" title="Bu tanım için kalıcı bağlantı">¶</a> </dt>

<dd>Call <code class="docutils literal notranslate">exit(exitcode)</code> if status is an exit. Print the error

message and exit with a non-zero exit code if status is an error. Must

only be called if <code class="docutils literal notranslate">PyStatus_Exception(status)</code> is non-zero.

</dd></dl>

Not

Internally, Python uses macros which set <code class="docutils literal notranslate">PyStatus.func</code>,

whereas functions to create a status set <code class="docutils literal notranslate">func</code> to <code class="docutils literal notranslate">NULL</code>.

</div>

Example:

<div class="highlight-c notranslate"><div class="highlight"><pre>PyStatus alloc(void **ptr, size_t size)

{

*ptr = PyMem_RawMalloc(size);

if (*ptr == NULL) {

return PyStatus_NoMemory();

}

return PyStatus_Ok();

}

int main(int argc, char **argv)

{

void *ptr;

PyStatus status = alloc(&ptr, 16);

Py_ExitStatusException(status);

}

PyMem_Free(ptr);

return 0;

}

</pre></div>

</div>

</section>

<h2>PyPreConfig<a class="headerlink" href="#pypreconfig" title="Permalink to this heading">¶</a></h2>

type PyPreConfig<a class="headerlink" href="#c.PyPreConfig" title="Bu tanım için kalıcı bağlantı">¶</a> </dt>

<dd>Structure used to preinitialize Python.

Function to initialize a preconfiguration:

void PyPreConfig_InitPythonConfig(<a class="reference internal" href="#c.PyPreConfig" title="PyPreConfig">PyPreConfig</a> *preconfig)<a class="headerlink" href="#c.PyPreConfig_InitPythonConfig" title="Bu tanım için kalıcı bağlantı">¶</a> </dt>

<dd>Initialize the preconfiguration with <a class="reference internal" href="#init-python-config">Python Configuration</a>.

</dd></dl>

void PyPreConfig_InitIsolatedConfig(<a class="reference internal" href="#c.PyPreConfig" title="PyPreConfig">PyPreConfig</a> *preconfig)<a class="headerlink" href="#c.PyPreConfig_InitIsolatedConfig" title="Bu tanım için kalıcı bağlantı">¶</a> </dt>

<dd>Initialize the preconfiguration with <a class="reference internal" href="#init-isolated-conf">Isolated Configuration</a>.

</dd></dl>

Structure fields:

int allocator<a class="headerlink" href="#c.PyPreConfig.allocator" title="Bu tanım için kalıcı bağlantı">¶</a> </dt>

<dd>Name of the Python memory allocators:

<li><code class="docutils literal notranslate">PYMEM_ALLOCATOR_NOT_SET</code> (<code class="docutils literal notranslate">0</code>): don’t change memory allocators

(use defaults).</li>

<li><code class="docutils literal notranslate">PYMEM_ALLOCATOR_DEFAULT</code> (<code class="docutils literal notranslate">1</code>): <a class="reference internal" href="memory.html#default-memory-allocators">default memory allocators</a>.</li>

<li><code class="docutils literal notranslate">PYMEM_ALLOCATOR_DEBUG</code> (<code class="docutils literal notranslate">2</code>): <a class="reference internal" href="memory.html#default-memory-allocators">default memory allocators</a> with <a class="reference internal" href="memory.html#pymem-debug-hooks">debug hooks</a>.</li>

<li><code class="docutils literal notranslate">PYMEM_ALLOCATOR_MALLOC</code> (<code class="docutils literal notranslate">3</code>): use <code class="docutils literal notranslate">malloc()</code> of the C library.</li>

<li><code class="docutils literal notranslate">PYMEM_ALLOCATOR_MALLOC_DEBUG</code> (<code class="docutils literal notranslate">4</code>): force usage of

<code class="docutils literal notranslate">malloc()</code> with <a class="reference internal" href="memory.html#pymem-debug-hooks">debug hooks</a>.</li>

<li><code class="docutils literal notranslate">PYMEM_ALLOCATOR_PYMALLOC</code> (<code class="docutils literal notranslate">5</code>): <a class="reference internal" href="memory.html#pymalloc">Python pymalloc memory

allocator</a>.</li>

<li><code class="docutils literal notranslate">PYMEM_ALLOCATOR_PYMALLOC_DEBUG</code> (<code class="docutils literal notranslate">6</code>): <a class="reference internal" href="memory.html#pymalloc">Python pymalloc

memory allocator</a> with <a class="reference internal" href="memory.html#pymem-debug-hooks">debug hooks</a>.</li>

</ul>

<code class="docutils literal notranslate">PYMEM_ALLOCATOR_PYMALLOC</code> and <code class="docutils literal notranslate">PYMEM_ALLOCATOR_PYMALLOC_DEBUG</code> are

not supported if Python is <a class="reference internal" href="../using/configure.html#cmdoption-without-pymalloc"><code class="xref std std-option docutils literal notranslate">configured using --without-pymalloc</code></a>.

See <a class="reference internal" href="memory.html#memory">Memory Management</a>.

Default: <code class="docutils literal notranslate">PYMEM_ALLOCATOR_NOT_SET</code>.

</dd></dl>

int configure_locale<a class="headerlink" href="#c.PyPreConfig.configure_locale" title="Bu tanım için kalıcı bağlantı">¶</a> </dt>

<dd>Set the LC_CTYPE locale to the user preferred locale.

If equals to <code class="docutils literal notranslate">0</code>, set <a class="reference internal" href="#c.PyPreConfig.coerce_c_locale" title="PyPreConfig.coerce_c_locale"><code class="xref c c-member docutils literal notranslate">coerce_c_locale</code></a> and

<a class="reference internal" href="#c.PyPreConfig.coerce_c_locale_warn" title="PyPreConfig.coerce_c_locale_warn"><code class="xref c c-member docutils literal notranslate">coerce_c_locale_warn</code></a> members to <code class="docutils literal notranslate">0</code>.

See the <a class="reference internal" href="../glossary.html#term-locale-encoding">locale encoding</a>.

Default: <code class="docutils literal notranslate">1</code> in Python config, <code class="docutils literal notranslate">0</code> in isolated config.

</dd></dl>

int coerce_c_locale<a class="headerlink" href="#c.PyPreConfig.coerce_c_locale" title="Bu tanım için kalıcı bağlantı">¶</a> </dt>

<dd>If equals to <code class="docutils literal notranslate">2</code>, coerce the C locale.

If equals to <code class="docutils literal notranslate">1</code>, read the LC_CTYPE locale to decide if it should be

coerced.

See the <a class="reference internal" href="../glossary.html#term-locale-encoding">locale encoding</a>.

Default: <code class="docutils literal notranslate">-1</code> in Python config, <code class="docutils literal notranslate">0</code> in isolated config.

</dd></dl>

int coerce_c_locale_warn<a class="headerlink" href="#c.PyPreConfig.coerce_c_locale_warn" title="Bu tanım için kalıcı bağlantı">¶</a> </dt>

<dd>If non-zero, emit a warning if the C locale is coerced.

</dd></dl>

int dev_mode<a class="headerlink" href="#c.PyPreConfig.dev_mode" title="Bu tanım için kalıcı bağlantı">¶</a> </dt>

<dd><a class="reference internal" href="../library/devmode.html#devmode">Python Development Mode</a>: see

<a class="reference internal" href="#c.PyConfig.dev_mode" title="PyConfig.dev_mode"><code class="xref c c-member docutils literal notranslate">PyConfig.dev_mode</code></a>.

Default: <code class="docutils literal notranslate">-1</code> in Python mode, <code class="docutils literal notranslate">0</code> in isolated mode.

</dd></dl>

int isolated<a class="headerlink" href="#c.PyPreConfig.isolated" title="Bu tanım için kalıcı bağlantı">¶</a> </dt>

<dd>Isolated mode: see <a class="reference internal" href="#c.PyConfig.isolated" title="PyConfig.isolated"><code class="xref c c-member docutils literal notranslate">PyConfig.isolated</code></a>.

Default: <code class="docutils literal notranslate">0</code> in Python mode, <code class="docutils literal notranslate">1</code> in isolated mode.

</dd></dl>

int legacy_windows_fs_encoding<a class="headerlink" href="#c.PyPreConfig.legacy_windows_fs_encoding" title="Bu tanım için kalıcı bağlantı">¶</a> </dt>

<dd>If non-zero:

<li>Set <a class="reference internal" href="#c.PyPreConfig.utf8_mode" title="PyPreConfig.utf8_mode"><code class="xref c c-member docutils literal notranslate">PyPreConfig.utf8_mode</code></a> to <code class="docutils literal notranslate">0</code>,</li>

<li>Set <a class="reference internal" href="#c.PyConfig.filesystem_encoding" title="PyConfig.filesystem_encoding"><code class="xref c c-member docutils literal notranslate">PyConfig.filesystem_encoding</code></a> to <code class="docutils literal notranslate">"mbcs"</code>,</li>

<li>Set <a class="reference internal" href="#c.PyConfig.filesystem_errors" title="PyConfig.filesystem_errors"><code class="xref c c-member docutils literal notranslate">PyConfig.filesystem_errors</code></a> to <code class="docutils literal notranslate">"replace"</code>.</li>

</ul>

Initialized the from <a class="reference internal" href="../using/cmdline.html#envvar-PYTHONLEGACYWINDOWSFSENCODING"><code class="xref std std-envvar docutils literal notranslate">PYTHONLEGACYWINDOWSFSENCODING</code></a> environment

variable value.

Only available on Windows. <code class="docutils literal notranslate">#ifdef MS_WINDOWS</code> macro can be used for

Windows specific code.

Default: <code class="docutils literal notranslate">0</code>.

</dd></dl>

int parse_argv<a class="headerlink" href="#c.PyPreConfig.parse_argv" title="Bu tanım için kalıcı bağlantı">¶</a> </dt>

<dd>If non-zero, <a class="reference internal" href="#c.Py_PreInitializeFromArgs" title="Py_PreInitializeFromArgs"><code class="xref c c-func docutils literal notranslate">Py_PreInitializeFromArgs()</code></a> and

<a class="reference internal" href="#c.Py_PreInitializeFromBytesArgs" title="Py_PreInitializeFromBytesArgs"><code class="xref c c-func docutils literal notranslate">Py_PreInitializeFromBytesArgs()</code></a> parse their <code class="docutils literal notranslate">argv</code> argument the

same way the regular Python parses command line arguments: see

<a class="reference internal" href="../using/cmdline.html#using-on-cmdline">Command Line Arguments</a>.

</dd></dl>

int use_environment<a class="headerlink" href="#c.PyPreConfig.use_environment" title="Bu tanım için kalıcı bağlantı">¶</a> </dt>

<dd>Use <a class="reference internal" href="../using/cmdline.html#using-on-envvars">environment variables</a>? See

<a class="reference internal" href="#c.PyConfig.use_environment" title="PyConfig.use_environment"><code class="xref c c-member docutils literal notranslate">PyConfig.use_environment</code></a>.

Default: <code class="docutils literal notranslate">1</code> in Python config and <code class="docutils literal notranslate">0</code> in isolated config.

</dd></dl>

int utf8_mode<a class="headerlink" href="#c.PyPreConfig.utf8_mode" title="Bu tanım için kalıcı bağlantı">¶</a> </dt>

<dd>If non-zero, enable the <a class="reference internal" href="../library/os.html#utf8-mode">Python UTF-8 Mode</a>.

Set to <code class="docutils literal notranslate">0</code> or <code class="docutils literal notranslate">1</code> by the <a class="reference internal" href="../using/cmdline.html#cmdoption-X"><code class="xref std std-option docutils literal notranslate">-X utf8</code></a> command line option

and the <a class="reference internal" href="../using/cmdline.html#envvar-PYTHONUTF8"><code class="xref std std-envvar docutils literal notranslate">PYTHONUTF8</code></a> environment variable.

Also set to <code class="docutils literal notranslate">1</code> if the <code class="docutils literal notranslate">LC_CTYPE</code> locale is <code class="docutils literal notranslate">C</code> or <code class="docutils literal notranslate">POSIX</code>.

Default: <code class="docutils literal notranslate">-1</code> in Python config and <code class="docutils literal notranslate">0</code> in isolated config.

</dd></dl>

</section>

<h2>Preinitialize Python with PyPreConfig<a class="headerlink" href="#preinitialize-python-with-pypreconfig" title="Permalink to this heading">¶</a></h2>

The preinitialization of Python:

<li>Set the Python memory allocators (<a class="reference internal" href="#c.PyPreConfig.allocator" title="PyPreConfig.allocator"><code class="xref c c-member docutils literal notranslate">PyPreConfig.allocator</code></a>)</li>

<li>Configure the LC_CTYPE locale (<a class="reference internal" href="../glossary.html#term-locale-encoding">locale encoding</a>)</li>

<li>Set the <a class="reference internal" href="../library/os.html#utf8-mode">Python UTF-8 Mode</a>

(<a class="reference internal" href="#c.PyPreConfig.utf8_mode" title="PyPreConfig.utf8_mode"><code class="xref c c-member docutils literal notranslate">PyPreConfig.utf8_mode</code></a>)</li>

</ul>

The current preconfiguration (<code class="docutils literal notranslate">PyPreConfig</code> type) is stored in

<code class="docutils literal notranslate">_PyRuntime.preconfig</code>.

Functions to preinitialize Python:

<dd>Preinitialize Python from preconfig preconfiguration.

preconfig must not be <code class="docutils literal notranslate">NULL</code>.

</dd></dl>

<a class="reference internal" href="#c.PyStatus" title="PyStatus">PyStatus</a> Py_PreInitializeFromBytesArgs(const <a class="reference internal" href="#c.PyPreConfig" title="PyPreConfig">PyPreConfig</a> *preconfig, int argc, char *const *argv)<a class="headerlink" href="#c.Py_PreInitializeFromBytesArgs" title="Bu tanım için kalıcı bağlantı">¶</a> </dt>

<dd>Preinitialize Python from preconfig preconfiguration.

Parse argv command line arguments (bytes strings) if

<a class="reference internal" href="#c.PyPreConfig.parse_argv" title="PyPreConfig.parse_argv"><code class="xref c c-member docutils literal notranslate">parse_argv</code></a> of preconfig is non-zero.

preconfig must not be <code class="docutils literal notranslate">NULL</code>.

</dd></dl>

<a class="reference internal" href="#c.PyStatus" title="PyStatus">PyStatus</a> Py_PreInitializeFromArgs(const <a class="reference internal" href="#c.PyPreConfig" title="PyPreConfig">PyPreConfig</a> *preconfig, int argc, wchar_t *const *argv)<a class="headerlink" href="#c.Py_PreInitializeFromArgs" title="Bu tanım için kalıcı bağlantı">¶</a> </dt>

<dd>Preinitialize Python from preconfig preconfiguration.

Parse argv command line arguments (wide strings) if

preconfig must not be <code class="docutils literal notranslate">NULL</code>.

</dd></dl>

The caller is responsible to handle exceptions (error or exit) using

<a class="reference internal" href="#c.PyStatus_Exception" title="PyStatus_Exception"><code class="xref c c-func docutils literal notranslate">PyStatus_Exception()</code></a> and <a class="reference internal" href="#c.Py_ExitStatusException" title="Py_ExitStatusException"><code class="xref c c-func docutils literal notranslate">Py_ExitStatusException()</code></a>.

For <a class="reference internal" href="#init-python-config">Python Configuration</a>

(<a class="reference internal" href="#c.PyPreConfig_InitPythonConfig" title="PyPreConfig_InitPythonConfig"><code class="xref c c-func docutils literal notranslate">PyPreConfig_InitPythonConfig()</code></a>), if Python is initialized with

command line arguments, the command line arguments must also be passed to

preinitialize Python, since they have an effect on the pre-configuration

like encodings. For example, the <a class="reference internal" href="../using/cmdline.html#cmdoption-X"><code class="xref std std-option docutils literal notranslate">-X utf8</code></a> command line option

enables the <a class="reference internal" href="../library/os.html#utf8-mode">Python UTF-8 Mode</a>.

<code class="docutils literal notranslate">PyMem_SetAllocator()</code> can be called after <a class="reference internal" href="#c.Py_PreInitialize" title="Py_PreInitialize"><code class="xref c c-func docutils literal notranslate">Py_PreInitialize()</code></a> and

before <a class="reference internal" href="#c.Py_InitializeFromConfig" title="Py_InitializeFromConfig"><code class="xref c c-func docutils literal notranslate">Py_InitializeFromConfig()</code></a> to install a custom memory allocator.

It can be called before <a class="reference internal" href="#c.Py_PreInitialize" title="Py_PreInitialize"><code class="xref c c-func docutils literal notranslate">Py_PreInitialize()</code></a> if

<a class="reference internal" href="#c.PyPreConfig.allocator" title="PyPreConfig.allocator"><code class="xref c c-member docutils literal notranslate">PyPreConfig.allocator</code></a> is set to <code class="docutils literal notranslate">PYMEM_ALLOCATOR_NOT_SET</code>.

Python memory allocation functions like <a class="reference internal" href="memory.html#c.PyMem_RawMalloc" title="PyMem_RawMalloc"><code class="xref c c-func docutils literal notranslate">PyMem_RawMalloc()</code></a> must not be

used before the Python preinitialization, whereas calling directly <code class="docutils literal notranslate">malloc()</code>

and <code class="docutils literal notranslate">free()</code> is always safe. <a class="reference internal" href="sys.html#c.Py_DecodeLocale" title="Py_DecodeLocale"><code class="xref c c-func docutils literal notranslate">Py_DecodeLocale()</code></a> must not be called

before the Python preinitialization.

Example using the preinitialization to enable

the <a class="reference internal" href="../library/os.html#utf8-mode">Python UTF-8 Mode</a>:

<div class="highlight-c notranslate"><div class="highlight"><pre>PyStatus status;

PyPreConfig preconfig;

PyPreConfig_InitPythonConfig(&preconfig);

preconfig.utf8_mode = 1;

status = Py_PreInitialize(&preconfig);

if (PyStatus_Exception(status)) {

Py_ExitStatusException(status);

}

/* at this point, Python speaks UTF-8 */

Py_Initialize();

/* ... use Python API here ... */

Py_Finalize();

</pre></div>

</div>

</section>

<h2>PyConfig<a class="headerlink" href="#pyconfig" title="Permalink to this heading">¶</a></h2>

type PyConfig<a class="headerlink" href="#c.PyConfig" title="Bu tanım için kalıcı bağlantı">¶</a> </dt>

<dd>Structure containing most parameters to configure Python.

When done, the <a class="reference internal" href="#c.PyConfig_Clear" title="PyConfig_Clear"><code class="xref c c-func docutils literal notranslate">PyConfig_Clear()</code></a> function must be used to release the

configuration memory.

Structure methods:

void PyConfig_InitPythonConfig(<a class="reference internal" href="#c.PyConfig" title="PyConfig">PyConfig</a> *config)<a class="headerlink" href="#c.PyConfig_InitPythonConfig" title="Bu tanım için kalıcı bağlantı">¶</a> </dt>

<dd>Initialize configuration with the <a class="reference internal" href="#init-python-config">Python Configuration</a>.

</dd></dl>

void PyConfig_InitIsolatedConfig(<a class="reference internal" href="#c.PyConfig" title="PyConfig">PyConfig</a> *config)<a class="headerlink" href="#c.PyConfig_InitIsolatedConfig" title="Bu tanım için kalıcı bağlantı">¶</a> </dt>

<dd>Initialize configuration with the <a class="reference internal" href="#init-isolated-conf">Isolated Configuration</a>.

</dd></dl>

<a class="reference internal" href="#c.PyStatus" title="PyStatus">PyStatus</a> PyConfig_SetString(<a class="reference internal" href="#c.PyConfig" title="PyConfig">PyConfig</a> *config, wchar_t *const *config_str, const wchar_t *str)<a class="headerlink" href="#c.PyConfig_SetString" title="Bu tanım için kalıcı bağlantı">¶</a> </dt>

<dd>Copy the wide character string str into <code class="docutils literal notranslate">*config_str</code>.

<a class="reference internal" href="#c-preinit">Preinitialize Python</a> if needed.

</dd></dl>

<a class="reference internal" href="#c.PyStatus" title="PyStatus">PyStatus</a> PyConfig_SetBytesString(<a class="reference internal" href="#c.PyConfig" title="PyConfig">PyConfig</a> *config, wchar_t *const *config_str, const char *str)<a class="headerlink" href="#c.PyConfig_SetBytesString" title="Bu tanım için kalıcı bağlantı">¶</a> </dt>

<dd>Decode str using <a class="reference internal" href="sys.html#c.Py_DecodeLocale" title="Py_DecodeLocale"><code class="xref c c-func docutils literal notranslate">Py_DecodeLocale()</code></a> and set the result into

<code class="docutils literal notranslate">*config_str</code>.

<a class="reference internal" href="#c-preinit">Preinitialize Python</a> if needed.

</dd></dl>

<a class="reference internal" href="#c.PyStatus" title="PyStatus">PyStatus</a> PyConfig_SetArgv(<a class="reference internal" href="#c.PyConfig" title="PyConfig">PyConfig</a> *config, int argc, wchar_t *const *argv)<a class="headerlink" href="#c.PyConfig_SetArgv" title="Bu tanım için kalıcı bağlantı">¶</a> </dt>

<dd>Set command line arguments (<a class="reference internal" href="#c.PyConfig.argv" title="PyConfig.argv"><code class="xref c c-member docutils literal notranslate">argv</code></a> member of

config) from the argv list of wide character strings.

<a class="reference internal" href="#c-preinit">Preinitialize Python</a> if needed.

</dd></dl>

<a class="reference internal" href="#c.PyStatus" title="PyStatus">PyStatus</a> PyConfig_SetBytesArgv(<a class="reference internal" href="#c.PyConfig" title="PyConfig">PyConfig</a> *config, int argc, char *const *argv)<a class="headerlink" href="#c.PyConfig_SetBytesArgv" title="Bu tanım için kalıcı bağlantı">¶</a> </dt>

config) from the argv list of bytes strings. Decode bytes using

<a class="reference internal" href="sys.html#c.Py_DecodeLocale" title="Py_DecodeLocale"><code class="xref c c-func docutils literal notranslate">Py_DecodeLocale()</code></a>.

<a class="reference internal" href="#c-preinit">Preinitialize Python</a> if needed.

</dd></dl>

<a class="reference internal" href="#c.PyStatus" title="PyStatus">PyStatus</a> PyConfig_SetWideStringList(<a class="reference internal" href="#c.PyConfig" title="PyConfig">PyConfig</a> *config, <a class="reference internal" href="#c.PyWideStringList" title="PyWideStringList">PyWideStringList</a> *list, <a class="reference internal" href="intro.html#c.Py_ssize_t" title="Py_ssize_t">Py_ssize_t</a> length, wchar_t **items)<a class="headerlink" href="#c.PyConfig_SetWideStringList" title="Bu tanım için kalıcı bağlantı">¶</a> </dt>

<dd>Set the list of wide strings list to length and items.

<a class="reference internal" href="#c-preinit">Preinitialize Python</a> if needed.

</dd></dl>

<dd>Read all Python configuration.

Fields which are already initialized are left unchanged.

Fields for <a class="reference internal" href="#init-path-config">path configuration</a> are no longer

calculated or modified when calling this function, as of Python 3.11.

The <a class="reference internal" href="#c.PyConfig_Read" title="PyConfig_Read"><code class="xref c c-func docutils literal notranslate">PyConfig_Read()</code></a> function only parses

<a class="reference internal" href="#c.PyConfig.argv" title="PyConfig.argv"><code class="xref c c-member docutils literal notranslate">PyConfig.argv</code></a> arguments once: <a class="reference internal" href="#c.PyConfig.parse_argv" title="PyConfig.parse_argv"><code class="xref c c-member docutils literal notranslate">PyConfig.parse_argv</code></a>

is set to <code class="docutils literal notranslate">2</code> after arguments are parsed. Since Python arguments are

strippped from <a class="reference internal" href="#c.PyConfig.argv" title="PyConfig.argv"><code class="xref c c-member docutils literal notranslate">PyConfig.argv</code></a>, parsing arguments twice would

parse the application options as Python options.

<a class="reference internal" href="#c-preinit">Preinitialize Python</a> if needed.

3.10 sürümünde değişti: The <a class="reference internal" href="#c.PyConfig.argv" title="PyConfig.argv"><code class="xref c c-member docutils literal notranslate">PyConfig.argv</code></a> arguments are now only parsed once,

<a class="reference internal" href="#c.PyConfig.parse_argv" title="PyConfig.parse_argv"><code class="xref c c-member docutils literal notranslate">PyConfig.parse_argv</code></a> is set to <code class="docutils literal notranslate">2</code> after arguments are

parsed, and arguments are only parsed if

<a class="reference internal" href="#c.PyConfig.parse_argv" title="PyConfig.parse_argv"><code class="xref c c-member docutils literal notranslate">PyConfig.parse_argv</code></a> equals <code class="docutils literal notranslate">1</code>.

</div>

3.11 sürümünde değişti: <a class="reference internal" href="#c.PyConfig_Read" title="PyConfig_Read"><code class="xref c c-func docutils literal notranslate">PyConfig_Read()</code></a> no longer calculates all paths, and so fields

listed under <a class="reference internal" href="#init-path-config">Python Path Configuration</a> may

no longer be updated until <a class="reference internal" href="#c.Py_InitializeFromConfig" title="Py_InitializeFromConfig"><code class="xref c c-func docutils literal notranslate">Py_InitializeFromConfig()</code></a> is

called.

</div>

</dd></dl>

void PyConfig_Clear(<a class="reference internal" href="#c.PyConfig" title="PyConfig">PyConfig</a> *config)<a class="headerlink" href="#c.PyConfig_Clear" title="Bu tanım için kalıcı bağlantı">¶</a> </dt>

<dd>Release configuration memory.

</dd></dl>

Most <code class="docutils literal notranslate">PyConfig</code> methods <a class="reference internal" href="#c-preinit">preinitialize Python</a> if needed.

In that case, the Python preinitialization configuration

(<a class="reference internal" href="#c.PyPreConfig" title="PyPreConfig"><code class="xref c c-type docutils literal notranslate">PyPreConfig</code></a>) in based on the <a class="reference internal" href="#c.PyConfig" title="PyConfig"><code class="xref c c-type docutils literal notranslate">PyConfig</code></a>. If configuration

fields which are in common with <a class="reference internal" href="#c.PyPreConfig" title="PyPreConfig"><code class="xref c c-type docutils literal notranslate">PyPreConfig</code></a> are tuned, they must

be set before calling a <a class="reference internal" href="#c.PyConfig" title="PyConfig"><code class="xref c c-type docutils literal notranslate">PyConfig</code></a> method:

<li><a class="reference internal" href="#c.PyConfig.dev_mode" title="PyConfig.dev_mode"><code class="xref c c-member docutils literal notranslate">PyConfig.dev_mode</code></a></li>

<li><a class="reference internal" href="#c.PyConfig.isolated" title="PyConfig.isolated"><code class="xref c c-member docutils literal notranslate">PyConfig.isolated</code></a></li>

<li><a class="reference internal" href="#c.PyConfig.parse_argv" title="PyConfig.parse_argv"><code class="xref c c-member docutils literal notranslate">PyConfig.parse_argv</code></a></li>

<li><a class="reference internal" href="#c.PyConfig.use_environment" title="PyConfig.use_environment"><code class="xref c c-member docutils literal notranslate">PyConfig.use_environment</code></a></li>

</ul>

Moreover, if <a class="reference internal" href="#c.PyConfig_SetArgv" title="PyConfig_SetArgv"><code class="xref c c-func docutils literal notranslate">PyConfig_SetArgv()</code></a> or <a class="reference internal" href="#c.PyConfig_SetBytesArgv" title="PyConfig_SetBytesArgv"><code class="xref c c-func docutils literal notranslate">PyConfig_SetBytesArgv()</code></a>

is used, this method must be called before other methods, since the

preinitialization configuration depends on command line arguments (if

The caller of these methods is responsible to handle exceptions (error or

exit) using <code class="docutils literal notranslate">PyStatus_Exception()</code> and <code class="docutils literal notranslate">Py_ExitStatusException()</code>.

Structure fields:

<a class="reference internal" href="#c.PyWideStringList" title="PyWideStringList">PyWideStringList</a> argv<a class="headerlink" href="#c.PyConfig.argv" title="Bu tanım için kalıcı bağlantı">¶</a> </dt>

<dd>Command line arguments: <a class="reference internal" href="../library/sys.html#sys.argv" title="sys.argv"><code class="xref py py-data docutils literal notranslate">sys.argv</code></a>.

Set <a class="reference internal" href="#c.PyConfig.parse_argv" title="PyConfig.parse_argv"><code class="xref c c-member docutils literal notranslate">parse_argv</code></a> to <code class="docutils literal notranslate">1</code> to parse

<a class="reference internal" href="#c.PyConfig.argv" title="PyConfig.argv"><code class="xref c c-member docutils literal notranslate">argv</code></a> the same way the regular Python parses Python

command line arguments and then to strip Python arguments from

<a class="reference internal" href="#c.PyConfig.argv" title="PyConfig.argv"><code class="xref c c-member docutils literal notranslate">argv</code></a>.

If <a class="reference internal" href="#c.PyConfig.argv" title="PyConfig.argv"><code class="xref c c-member docutils literal notranslate">argv</code></a> is empty, an empty string is added to

ensure that <a class="reference internal" href="../library/sys.html#sys.argv" title="sys.argv"><code class="xref py py-data docutils literal notranslate">sys.argv</code></a> always exists and is never empty.

Default: <code class="docutils literal notranslate">NULL</code>.

See also the <a class="reference internal" href="#c.PyConfig.orig_argv" title="PyConfig.orig_argv"><code class="xref c c-member docutils literal notranslate">orig_argv</code></a> member.

</dd></dl>

int safe_path<a class="headerlink" href="#c.PyConfig.safe_path" title="Bu tanım için kalıcı bağlantı">¶</a> </dt>

<dd>If equals to zero, <code class="docutils literal notranslate">Py_RunMain()</code> prepends a potentially unsafe path to

<a class="reference internal" href="../library/sys.html#sys.path" title="sys.path"><code class="xref py py-data docutils literal notranslate">sys.path</code></a> at startup:

<li>If <a class="reference internal" href="#c.PyConfig.argv" title="PyConfig.argv"><code class="xref c c-member docutils literal notranslate">argv[0]</code></a> is equal to <code class="docutils literal notranslate">L"-m"</code>

(<code class="docutils literal notranslate">python -m module</code>), prepend the current working directory.</li>

<li>If running a script (<code class="docutils literal notranslate">python script.py</code>), prepend the script’s

directory. If it’s a symbolic link, resolve symbolic links.</li>

<li>Otherwise (<code class="docutils literal notranslate">python -c code</code> and <code class="docutils literal notranslate">python</code>), prepend an empty string,

which means the current working directory.</li>

</ul>

Set to <code class="docutils literal notranslate">1</code> by the <a class="reference internal" href="../using/cmdline.html#cmdoption-P"><code class="xref std std-option docutils literal notranslate">-P</code></a> command line option and the

<a class="reference internal" href="../using/cmdline.html#envvar-PYTHONSAFEPATH"><code class="xref std std-envvar docutils literal notranslate">PYTHONSAFEPATH</code></a> environment variable.

Default: <code class="docutils literal notranslate">0</code> in Python config, <code class="docutils literal notranslate">1</code> in isolated config.

3.11 sürümünde geldi.

</div>

</dd></dl>

wchar_t *base_exec_prefix<a class="headerlink" href="#c.PyConfig.base_exec_prefix" title="Bu tanım için kalıcı bağlantı">¶</a> </dt>

<dd><a class="reference internal" href="../library/sys.html#sys.base_exec_prefix" title="sys.base_exec_prefix"><code class="xref py py-data docutils literal notranslate">sys.base_exec_prefix</code></a>.

Default: <code class="docutils literal notranslate">NULL</code>.

Part of the <a class="reference internal" href="#init-path-config">Python Path Configuration</a> output.

</dd></dl>

wchar_t *base_executable<a class="headerlink" href="#c.PyConfig.base_executable" title="Bu tanım için kalıcı bağlantı">¶</a> </dt>

<dd>Python base executable: <code class="xref py py-data docutils literal notranslate">sys._base_executable</code>.

Set by the <code class="xref std std-envvar docutils literal notranslate">__PYVENV_LAUNCHER__</code> environment variable.

Set from <a class="reference internal" href="#c.PyConfig.executable" title="PyConfig.executable"><code class="xref c c-member docutils literal notranslate">PyConfig.executable</code></a> if <code class="docutils literal notranslate">NULL</code>.

Default: <code class="docutils literal notranslate">NULL</code>.

Part of the <a class="reference internal" href="#init-path-config">Python Path Configuration</a> output.

</dd></dl>

wchar_t *base_prefix<a class="headerlink" href="#c.PyConfig.base_prefix" title="Bu tanım için kalıcı bağlantı">¶</a> </dt>

<dd><a class="reference internal" href="../library/sys.html#sys.base_prefix" title="sys.base_prefix"><code class="xref py py-data docutils literal notranslate">sys.base_prefix</code></a>.

Default: <code class="docutils literal notranslate">NULL</code>.

Part of the <a class="reference internal" href="#init-path-config">Python Path Configuration</a> output.

</dd></dl>

int buffered_stdio<a class="headerlink" href="#c.PyConfig.buffered_stdio" title="Bu tanım için kalıcı bağlantı">¶</a> </dt>

<dd>If equals to <code class="docutils literal notranslate">0</code> and <a class="reference internal" href="#c.PyConfig.configure_c_stdio" title="PyConfig.configure_c_stdio"><code class="xref c c-member docutils literal notranslate">configure_c_stdio</code></a> is non-zero,

disable buffering on the C streams stdout and stderr.

Set to <code class="docutils literal notranslate">0</code> by the <a class="reference internal" href="../using/cmdline.html#cmdoption-u"><code class="xref std std-option docutils literal notranslate">-u</code></a> command line option and the

<a class="reference internal" href="../using/cmdline.html#envvar-PYTHONUNBUFFERED"><code class="xref std std-envvar docutils literal notranslate">PYTHONUNBUFFERED</code></a> environment variable.

stdin is always opened in buffered mode.

Default: <code class="docutils literal notranslate">1</code>.

</dd></dl>

int bytes_warning<a class="headerlink" href="#c.PyConfig.bytes_warning" title="Bu tanım için kalıcı bağlantı">¶</a> </dt>

<dd>If equals to <code class="docutils literal notranslate">1</code>, issue a warning when comparing <a class="reference internal" href="../library/stdtypes.html#bytes" title="bytes"><code class="xref py py-class docutils literal notranslate">bytes</code></a> or

<a class="reference internal" href="../library/stdtypes.html#bytearray" title="bytearray"><code class="xref py py-class docutils literal notranslate">bytearray</code></a> with <a class="reference internal" href="../library/stdtypes.html#str" title="str"><code class="xref py py-class docutils literal notranslate">str</code></a>, or comparing <a class="reference internal" href="../library/stdtypes.html#bytes" title="bytes"><code class="xref py py-class docutils literal notranslate">bytes</code></a> with

<a class="reference internal" href="../library/functions.html#int" title="int"><code class="xref py py-class docutils literal notranslate">int</code></a>.

If equal or greater to <code class="docutils literal notranslate">2</code>, raise a <a class="reference internal" href="../library/exceptions.html#BytesWarning" title="BytesWarning"><code class="xref py py-exc docutils literal notranslate">BytesWarning</code></a> exception in these

cases.

Incremented by the <a class="reference internal" href="../using/cmdline.html#cmdoption-b"><code class="xref std std-option docutils literal notranslate">-b</code></a> command line option.

Default: <code class="docutils literal notranslate">0</code>.

</dd></dl>

int warn_default_encoding<a class="headerlink" href="#c.PyConfig.warn_default_encoding" title="Bu tanım için kalıcı bağlantı">¶</a> </dt>

<dd>If non-zero, emit a <a class="reference internal" href="../library/exceptions.html#EncodingWarning" title="EncodingWarning"><code class="xref py py-exc docutils literal notranslate">EncodingWarning</code></a> warning when <a class="reference internal" href="../library/io.html#io.TextIOWrapper" title="io.TextIOWrapper"><code class="xref py py-class docutils literal notranslate">io.TextIOWrapper</code></a>

uses its default encoding. See <a class="reference internal" href="../library/io.html#io-encoding-warning">Opt-in EncodingWarning</a> for details.

Default: <code class="docutils literal notranslate">0</code>.

3.10 sürümünde geldi.

</div>

</dd></dl>

int code_debug_ranges<a class="headerlink" href="#c.PyConfig.code_debug_ranges" title="Bu tanım için kalıcı bağlantı">¶</a> </dt>

<dd>If equals to <code class="docutils literal notranslate">0</code>, disables the inclusion of the end line and column

mappings in code objects. Also disables traceback printing carets to

specific error locations.

Set to <code class="docutils literal notranslate">0</code> by the <a class="reference internal" href="../using/cmdline.html#envvar-PYTHONNODEBUGRANGES"><code class="xref std std-envvar docutils literal notranslate">PYTHONNODEBUGRANGES</code></a> environment variable

and by the <a class="reference internal" href="../using/cmdline.html#cmdoption-X"><code class="xref std std-option docutils literal notranslate">-X no_debug_ranges</code></a> command line option.

Default: <code class="docutils literal notranslate">1</code>.

3.11 sürümünde geldi.

</div>

</dd></dl>

wchar_t *check_hash_pycs_mode<a class="headerlink" href="#c.PyConfig.check_hash_pycs_mode" title="Bu tanım için kalıcı bağlantı">¶</a> </dt>

<dd>Control the validation behavior of hash-based <code class="docutils literal notranslate">.pyc</code> files:

value of the <a class="reference internal" href="../using/cmdline.html#cmdoption-check-hash-based-pycs"><code class="xref std std-option docutils literal notranslate">--check-hash-based-pycs</code></a> command line option.

Valid values:

<li><code class="docutils literal notranslate">L"always"</code>: Hash the source file for invalidation regardless of

value of the ‘check_source’ flag.</li>

<li><code class="docutils literal notranslate">L"never"</code>: Assume that hash-based pycs always are valid.</li>

<li><code class="docutils literal notranslate">L"default"</code>: The ‘check_source’ flag in hash-based pycs

determines invalidation.</li>

</ul>

Default: <code class="docutils literal notranslate">L"default"</code>.

See also <a class="pep reference external" href="https://peps.python.org/pep-0552/">PEP 552</a> “Deterministic pycs”.

</dd></dl>

int configure_c_stdio<a class="headerlink" href="#c.PyConfig.configure_c_stdio" title="Bu tanım için kalıcı bağlantı">¶</a> </dt>

<dd>If non-zero, configure C standard streams:

<li>On Windows, set the binary mode (<code class="docutils literal notranslate">O_BINARY</code>) on stdin, stdout and

stderr.</li>

<li>If <a class="reference internal" href="#c.PyConfig.buffered_stdio" title="PyConfig.buffered_stdio"><code class="xref c c-member docutils literal notranslate">buffered_stdio</code></a> equals zero, disable buffering

of stdin, stdout and stderr streams.</li>

<li>If <a class="reference internal" href="#c.PyConfig.interactive" title="PyConfig.interactive"><code class="xref c c-member docutils literal notranslate">interactive</code></a> is non-zero, enable stream

buffering on stdin and stdout (only stdout on Windows).</li>

</ul>

</dd></dl>

int dev_mode<a class="headerlink" href="#c.PyConfig.dev_mode" title="Bu tanım için kalıcı bağlantı">¶</a> </dt>

<dd>If non-zero, enable the <a class="reference internal" href="../library/devmode.html#devmode">Python Development Mode</a>.

Set to <code class="docutils literal notranslate">1</code> by the <a class="reference internal" href="../using/cmdline.html#cmdoption-X"><code class="xref std std-option docutils literal notranslate">-X dev</code></a> option and the

<a class="reference internal" href="../using/cmdline.html#envvar-PYTHONDEVMODE"><code class="xref std std-envvar docutils literal notranslate">PYTHONDEVMODE</code></a> environment variable.

</dd></dl>

int dump_refs<a class="headerlink" href="#c.PyConfig.dump_refs" title="Bu tanım için kalıcı bağlantı">¶</a> </dt>

<dd>Dump Python references?

If non-zero, dump all objects which are still alive at exit.

Set to <code class="docutils literal notranslate">1</code> by the <a class="reference internal" href="../using/cmdline.html#envvar-PYTHONDUMPREFS"><code class="xref std std-envvar docutils literal notranslate">PYTHONDUMPREFS</code></a> environment variable.

Need a special build of Python with the <code class="docutils literal notranslate">Py_TRACE_REFS</code> macro defined:

see the <a class="reference internal" href="../using/configure.html#cmdoption-with-trace-refs"><code class="xref std std-option docutils literal notranslate">configure --with-trace-refs option</code></a>.

Default: <code class="docutils literal notranslate">0</code>.

</dd></dl>

wchar_t *exec_prefix<a class="headerlink" href="#c.PyConfig.exec_prefix" title="Bu tanım için kalıcı bağlantı">¶</a> </dt>

<dd>The site-specific directory prefix where the platform-dependent Python

files are installed: <a class="reference internal" href="../library/sys.html#sys.exec_prefix" title="sys.exec_prefix"><code class="xref py py-data docutils literal notranslate">sys.exec_prefix</code></a>.

Default: <code class="docutils literal notranslate">NULL</code>.

Part of the <a class="reference internal" href="#init-path-config">Python Path Configuration</a> output.

</dd></dl>

wchar_t *executable<a class="headerlink" href="#c.PyConfig.executable" title="Bu tanım için kalıcı bağlantı">¶</a> </dt>

<dd>The absolute path of the executable binary for the Python interpreter:

<a class="reference internal" href="../library/sys.html#sys.executable" title="sys.executable"><code class="xref py py-data docutils literal notranslate">sys.executable</code></a>.

Default: <code class="docutils literal notranslate">NULL</code>.

Part of the <a class="reference internal" href="#init-path-config">Python Path Configuration</a> output.

</dd></dl>

int faulthandler<a class="headerlink" href="#c.PyConfig.faulthandler" title="Bu tanım için kalıcı bağlantı">¶</a> </dt>

<dd>Enable faulthandler?

If non-zero, call <a class="reference internal" href="../library/faulthandler.html#faulthandler.enable" title="faulthandler.enable"><code class="xref py py-func docutils literal notranslate">faulthandler.enable()</code></a> at startup.

Set to <code class="docutils literal notranslate">1</code> by <a class="reference internal" href="../using/cmdline.html#cmdoption-X"><code class="xref std std-option docutils literal notranslate">-X faulthandler</code></a> and the

<a class="reference internal" href="../using/cmdline.html#envvar-PYTHONFAULTHANDLER"><code class="xref std std-envvar docutils literal notranslate">PYTHONFAULTHANDLER</code></a> environment variable.

</dd></dl>

wchar_t *filesystem_encoding<a class="headerlink" href="#c.PyConfig.filesystem_encoding" title="Bu tanım için kalıcı bağlantı">¶</a> </dt>

<dd><a class="reference internal" href="../glossary.html#term-filesystem-encoding-and-error-handler">Filesystem encoding</a>:

<a class="reference internal" href="../library/sys.html#sys.getfilesystemencoding" title="sys.getfilesystemencoding"><code class="xref py py-func docutils literal notranslate">sys.getfilesystemencoding()</code></a>.

On macOS, Android and VxWorks: use <code class="docutils literal notranslate">"utf-8"</code> by default.

On Windows: use <code class="docutils literal notranslate">"utf-8"</code> by default, or <code class="docutils literal notranslate">"mbcs"</code> if

<a class="reference internal" href="#c.PyPreConfig.legacy_windows_fs_encoding" title="PyPreConfig.legacy_windows_fs_encoding"><code class="xref c c-member docutils literal notranslate">legacy_windows_fs_encoding</code></a> of

<a class="reference internal" href="#c.PyPreConfig" title="PyPreConfig"><code class="xref c c-type docutils literal notranslate">PyPreConfig</code></a> is non-zero.

Default encoding on other platforms:

<li><code class="docutils literal notranslate">"utf-8"</code> if <a class="reference internal" href="#c.PyPreConfig.utf8_mode" title="PyPreConfig.utf8_mode"><code class="xref c c-member docutils literal notranslate">PyPreConfig.utf8_mode</code></a> is non-zero.</li>

<li><code class="docutils literal notranslate">"ascii"</code> if Python detects that <code class="docutils literal notranslate">nl_langinfo(CODESET)</code> announces

the ASCII encoding, whereas the <code class="docutils literal notranslate">mbstowcs()</code> function

decodes from a different encoding (usually Latin1).</li>

<li><code class="docutils literal notranslate">"utf-8"</code> if <code class="docutils literal notranslate">nl_langinfo(CODESET)</code> returns an empty string.</li>

<li>Otherwise, use the <a class="reference internal" href="../glossary.html#term-locale-encoding">locale encoding</a>:

<code class="docutils literal notranslate">nl_langinfo(CODESET)</code> result.</li>

</ul>

At Python startup, the encoding name is normalized to the Python codec

name. For example, <code class="docutils literal notranslate">"ANSI_X3.4-1968"</code> is replaced with <code class="docutils literal notranslate">"ascii"</code>.

See also the <a class="reference internal" href="#c.PyConfig.filesystem_errors" title="PyConfig.filesystem_errors"><code class="xref c c-member docutils literal notranslate">filesystem_errors</code></a> member.

</dd></dl>

wchar_t *filesystem_errors<a class="headerlink" href="#c.PyConfig.filesystem_errors" title="Bu tanım için kalıcı bağlantı">¶</a> </dt>

<dd><a class="reference internal" href="../glossary.html#term-filesystem-encoding-and-error-handler">Filesystem error handler</a>:

<a class="reference internal" href="../library/sys.html#sys.getfilesystemencodeerrors" title="sys.getfilesystemencodeerrors"><code class="xref py py-func docutils literal notranslate">sys.getfilesystemencodeerrors()</code></a>.

On Windows: use <code class="docutils literal notranslate">"surrogatepass"</code> by default, or <code class="docutils literal notranslate">"replace"</code> if

<a class="reference internal" href="#c.PyPreConfig" title="PyPreConfig"><code class="xref c c-type docutils literal notranslate">PyPreConfig</code></a> is non-zero.

On other platforms: use <code class="docutils literal notranslate">"surrogateescape"</code> by default.

Supported error handlers:

<li><code class="docutils literal notranslate">"strict"</code></li>

<li><code class="docutils literal notranslate">"surrogateescape"</code></li>

<li><code class="docutils literal notranslate">"surrogatepass"</code> (only supported with the UTF-8 encoding)</li>

</ul>

See also the <a class="reference internal" href="#c.PyConfig.filesystem_encoding" title="PyConfig.filesystem_encoding"><code class="xref c c-member docutils literal notranslate">filesystem_encoding</code></a> member.

</dd></dl>

unsigned long hash_seed<a class="headerlink" href="#c.PyConfig.hash_seed" title="Bu tanım için kalıcı bağlantı">¶</a> </dt>

int use_hash_seed<a class="headerlink" href="#c.PyConfig.use_hash_seed" title="Bu tanım için kalıcı bağlantı">¶</a> </dt>

<dd>Randomized hash function seed.

If <a class="reference internal" href="#c.PyConfig.use_hash_seed" title="PyConfig.use_hash_seed"><code class="xref c c-member docutils literal notranslate">use_hash_seed</code></a> is zero, a seed is chosen randomly

at Python startup, and <a class="reference internal" href="#c.PyConfig.hash_seed" title="PyConfig.hash_seed"><code class="xref c c-member docutils literal notranslate">hash_seed</code></a> is ignored.

Set by the <a class="reference internal" href="../using/cmdline.html#envvar-PYTHONHASHSEED"><code class="xref std std-envvar docutils literal notranslate">PYTHONHASHSEED</code></a> environment variable.

Default use_hash_seed value: <code class="docutils literal notranslate">-1</code> in Python mode, <code class="docutils literal notranslate">0</code> in isolated

mode.

</dd></dl>

wchar_t *home<a class="headerlink" href="#c.PyConfig.home" title="Bu tanım için kalıcı bağlantı">¶</a> </dt>

<dd>Python home directory.

If <a class="reference internal" href="init.html#c.Py_SetPythonHome" title="Py_SetPythonHome"><code class="xref c c-func docutils literal notranslate">Py_SetPythonHome()</code></a> has been called, use its argument if it is

not <code class="docutils literal notranslate">NULL</code>.

Set by the <a class="reference internal" href="../using/cmdline.html#envvar-PYTHONHOME"><code class="xref std std-envvar docutils literal notranslate">PYTHONHOME</code></a> environment variable.

Default: <code class="docutils literal notranslate">NULL</code>.

Part of the <a class="reference internal" href="#init-path-config">Python Path Configuration</a> input.

</dd></dl>

int import_time<a class="headerlink" href="#c.PyConfig.import_time" title="Bu tanım için kalıcı bağlantı">¶</a> </dt>

<dd>If non-zero, profile import time.

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