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  &lt;div class=&quot;section&quot; id=&quot;module-sysconfig&quot;&gt;
&lt;span id=&quot;sysconfig-provide-access-to-python-s-configuration-information&quot;&gt;&lt;/span&gt;&lt;h1&gt;27.2. &lt;a class=&quot;reference internal&quot; href=&quot;#module-sysconfig&quot; title=&quot;sysconfig: Python's configuration information&quot;&gt;&lt;tt class=&quot;xref py py-mod docutils literal&quot;&gt;&lt;span class=&quot;pre&quot;&gt;sysconfig&lt;/span&gt;&lt;/tt&gt;&lt;/a&gt; &amp;#8212; Provide access to Python&amp;#8217;s configuration information&lt;a class=&quot;headerlink&quot; href=&quot;#module-sysconfig&quot; title=&quot;Permalink to this headline&quot;&gt;¶&lt;/a&gt;&lt;/h1&gt;
&lt;p class=&quot;versionadded&quot; id=&quot;index-0&quot;&gt;
&lt;span class=&quot;versionmodified&quot;&gt;New in version 2.7.&lt;/span&gt;&lt;/p&gt;
&lt;p&gt;&lt;strong&gt;Source code:&lt;/strong&gt; &lt;a class=&quot;reference external&quot; href=&quot;http://hg.python.org/cpython/file/2.7/Lib/sysconfig.py&quot;&gt;Lib/sysconfig.py&lt;/a&gt;&lt;/p&gt;
&lt;hr class=&quot;docutils&quot; /&gt;
&lt;p&gt;The &lt;a class=&quot;reference internal&quot; href=&quot;#module-sysconfig&quot; title=&quot;sysconfig: Python's configuration information&quot;&gt;&lt;tt class=&quot;xref py py-mod docutils literal&quot;&gt;&lt;span class=&quot;pre&quot;&gt;sysconfig&lt;/span&gt;&lt;/tt&gt;&lt;/a&gt; module provides access to Python&amp;#8217;s configuration
information like the list of installation paths and the configuration variables
relevant for the current platform.&lt;/p&gt;
&lt;div class=&quot;section&quot; id=&quot;configuration-variables&quot;&gt;
&lt;h2&gt;27.2.1. Configuration variables&lt;a class=&quot;headerlink&quot; href=&quot;#configuration-variables&quot; title=&quot;Permalink to this headline&quot;&gt;¶&lt;/a&gt;&lt;/h2&gt;
&lt;p&gt;A Python distribution contains a &lt;tt class=&quot;file docutils literal&quot;&gt;&lt;span class=&quot;pre&quot;&gt;Makefile&lt;/span&gt;&lt;/tt&gt; and a &lt;tt class=&quot;file docutils literal&quot;&gt;&lt;span class=&quot;pre&quot;&gt;pyconfig.h&lt;/span&gt;&lt;/tt&gt;
header file that are necessary to build both the Python binary itself and
third-party C extensions compiled using &lt;a class=&quot;reference internal&quot; href=&quot;distutils.html#module-distutils&quot; title=&quot;distutils: Support for building and installing Python modules into an existing Python installation.&quot;&gt;&lt;tt class=&quot;xref py py-mod docutils literal&quot;&gt;&lt;span class=&quot;pre&quot;&gt;distutils&lt;/span&gt;&lt;/tt&gt;&lt;/a&gt;.&lt;/p&gt;
&lt;p&gt;&lt;a class=&quot;reference internal&quot; href=&quot;#module-sysconfig&quot; title=&quot;sysconfig: Python's configuration information&quot;&gt;&lt;tt class=&quot;xref py py-mod docutils literal&quot;&gt;&lt;span class=&quot;pre&quot;&gt;sysconfig&lt;/span&gt;&lt;/tt&gt;&lt;/a&gt; puts all variables found in these files in a dictionary that
can be accessed using &lt;a class=&quot;reference internal&quot; href=&quot;#sysconfig.get_config_vars&quot; title=&quot;sysconfig.get_config_vars&quot;&gt;&lt;tt class=&quot;xref py py-func docutils literal&quot;&gt;&lt;span class=&quot;pre&quot;&gt;get_config_vars()&lt;/span&gt;&lt;/tt&gt;&lt;/a&gt; or &lt;a class=&quot;reference internal&quot; href=&quot;#sysconfig.get_config_var&quot; title=&quot;sysconfig.get_config_var&quot;&gt;&lt;tt class=&quot;xref py py-func docutils literal&quot;&gt;&lt;span class=&quot;pre&quot;&gt;get_config_var()&lt;/span&gt;&lt;/tt&gt;&lt;/a&gt;.&lt;/p&gt;
&lt;p&gt;Notice that on Windows, it&amp;#8217;s a much smaller set.&lt;/p&gt;
&lt;dl class=&quot;function&quot;&gt;
&lt;dt id=&quot;sysconfig.get_config_vars&quot;&gt;
&lt;tt class=&quot;descclassname&quot;&gt;sysconfig.&lt;/tt&gt;&lt;tt class=&quot;descname&quot;&gt;get_config_vars&lt;/tt&gt;&lt;big&gt;(&lt;/big&gt;&lt;em&gt;*args&lt;/em&gt;&lt;big&gt;)&lt;/big&gt;&lt;a class=&quot;headerlink&quot; href=&quot;#sysconfig.get_config_vars&quot; title=&quot;Permalink to this definition&quot;&gt;¶&lt;/a&gt;&lt;/dt&gt;
&lt;dd&gt;&lt;p&gt;With no arguments, return a dictionary of all configuration variables
relevant for the current platform.&lt;/p&gt;
&lt;p&gt;With arguments, return a list of values that result from looking up each
argument in the configuration variable dictionary.&lt;/p&gt;
&lt;p&gt;For each argument, if the value is not found, return &lt;tt class=&quot;docutils literal&quot;&gt;&lt;span class=&quot;pre&quot;&gt;None&lt;/span&gt;&lt;/tt&gt;.&lt;/p&gt;
&lt;/dd&gt;&lt;/dl&gt;

&lt;dl class=&quot;function&quot;&gt;
&lt;dt id=&quot;sysconfig.get_config_var&quot;&gt;
&lt;tt class=&quot;descclassname&quot;&gt;sysconfig.&lt;/tt&gt;&lt;tt class=&quot;descname&quot;&gt;get_config_var&lt;/tt&gt;&lt;big&gt;(&lt;/big&gt;&lt;em&gt;name&lt;/em&gt;&lt;big&gt;)&lt;/big&gt;&lt;a class=&quot;headerlink&quot; href=&quot;#sysconfig.get_config_var&quot; title=&quot;Permalink to this definition&quot;&gt;¶&lt;/a&gt;&lt;/dt&gt;
&lt;dd&gt;&lt;p&gt;Return the value of a single variable &lt;em&gt;name&lt;/em&gt;. Equivalent to
&lt;tt class=&quot;docutils literal&quot;&gt;&lt;span class=&quot;pre&quot;&gt;get_config_vars().get(name)&lt;/span&gt;&lt;/tt&gt;.&lt;/p&gt;
&lt;p&gt;If &lt;em&gt;name&lt;/em&gt; is not found, return &lt;tt class=&quot;docutils literal&quot;&gt;&lt;span class=&quot;pre&quot;&gt;None&lt;/span&gt;&lt;/tt&gt;.&lt;/p&gt;
&lt;/dd&gt;&lt;/dl&gt;

&lt;p&gt;Example of usage:&lt;/p&gt;
&lt;div class=&quot;highlight-python&quot;&gt;&lt;div class=&quot;highlight&quot;&gt;&lt;pre&gt;&lt;span class=&quot;gp&quot;&gt;&amp;gt;&amp;gt;&amp;gt; &lt;/span&gt;&lt;span class=&quot;kn&quot;&gt;import&lt;/span&gt; &lt;span class=&quot;nn&quot;&gt;sysconfig&lt;/span&gt;
&lt;span class=&quot;gp&quot;&gt;&amp;gt;&amp;gt;&amp;gt; &lt;/span&gt;&lt;span class=&quot;n&quot;&gt;sysconfig&lt;/span&gt;&lt;span class=&quot;o&quot;&gt;.&lt;/span&gt;&lt;span class=&quot;n&quot;&gt;get_config_var&lt;/span&gt;&lt;span class=&quot;p&quot;&gt;(&lt;/span&gt;&lt;span class=&quot;s&quot;&gt;&amp;#39;Py_ENABLE_SHARED&amp;#39;&lt;/span&gt;&lt;span class=&quot;p&quot;&gt;)&lt;/span&gt;
&lt;span class=&quot;go&quot;&gt;0&lt;/span&gt;
&lt;span class=&quot;gp&quot;&gt;&amp;gt;&amp;gt;&amp;gt; &lt;/span&gt;&lt;span class=&quot;n&quot;&gt;sysconfig&lt;/span&gt;&lt;span class=&quot;o&quot;&gt;.&lt;/span&gt;&lt;span class=&quot;n&quot;&gt;get_config_var&lt;/span&gt;&lt;span class=&quot;p&quot;&gt;(&lt;/span&gt;&lt;span class=&quot;s&quot;&gt;&amp;#39;LIBDIR&amp;#39;&lt;/span&gt;&lt;span class=&quot;p&quot;&gt;)&lt;/span&gt;
&lt;span class=&quot;go&quot;&gt;&amp;#39;/usr/local/lib&amp;#39;&lt;/span&gt;
&lt;span class=&quot;gp&quot;&gt;&amp;gt;&amp;gt;&amp;gt; &lt;/span&gt;&lt;span class=&quot;n&quot;&gt;sysconfig&lt;/span&gt;&lt;span class=&quot;o&quot;&gt;.&lt;/span&gt;&lt;span class=&quot;n&quot;&gt;get_config_vars&lt;/span&gt;&lt;span class=&quot;p&quot;&gt;(&lt;/span&gt;&lt;span class=&quot;s&quot;&gt;&amp;#39;AR&amp;#39;&lt;/span&gt;&lt;span class=&quot;p&quot;&gt;,&lt;/span&gt; &lt;span class=&quot;s&quot;&gt;&amp;#39;CXX&amp;#39;&lt;/span&gt;&lt;span class=&quot;p&quot;&gt;)&lt;/span&gt;
&lt;span class=&quot;go&quot;&gt;[&amp;#39;ar&amp;#39;, &amp;#39;g++&amp;#39;]&lt;/span&gt;
&lt;/pre&gt;&lt;/div&gt;
&lt;/div&gt;
&lt;/div&gt;
&lt;div class=&quot;section&quot; id=&quot;installation-paths&quot;&gt;
&lt;h2&gt;27.2.2. Installation paths&lt;a class=&quot;headerlink&quot; href=&quot;#installation-paths&quot; title=&quot;Permalink to this headline&quot;&gt;¶&lt;/a&gt;&lt;/h2&gt;
&lt;p&gt;Python uses an installation scheme that differs depending on the platform and on
the installation options.  These schemes are stored in &lt;a class=&quot;reference internal&quot; href=&quot;#module-sysconfig&quot; title=&quot;sysconfig: Python's configuration information&quot;&gt;&lt;tt class=&quot;xref py py-mod docutils literal&quot;&gt;&lt;span class=&quot;pre&quot;&gt;sysconfig&lt;/span&gt;&lt;/tt&gt;&lt;/a&gt; under
unique identifiers based on the value returned by &lt;a class=&quot;reference internal&quot; href=&quot;os.html#os.name&quot; title=&quot;os.name&quot;&gt;&lt;tt class=&quot;xref py py-const docutils literal&quot;&gt;&lt;span class=&quot;pre&quot;&gt;os.name&lt;/span&gt;&lt;/tt&gt;&lt;/a&gt;.&lt;/p&gt;
&lt;p&gt;Every new component that is installed using &lt;a class=&quot;reference internal&quot; href=&quot;distutils.html#module-distutils&quot; title=&quot;distutils: Support for building and installing Python modules into an existing Python installation.&quot;&gt;&lt;tt class=&quot;xref py py-mod docutils literal&quot;&gt;&lt;span class=&quot;pre&quot;&gt;distutils&lt;/span&gt;&lt;/tt&gt;&lt;/a&gt; or a
Distutils-based system will follow the same scheme to copy its file in the right
places.&lt;/p&gt;
&lt;p&gt;Python currently supports seven schemes:&lt;/p&gt;
&lt;ul class=&quot;simple&quot;&gt;
&lt;li&gt;&lt;em&gt;posix_prefix&lt;/em&gt;: scheme for Posix platforms like Linux or Mac OS X.  This is
the default scheme used when Python or a component is installed.&lt;/li&gt;
&lt;li&gt;&lt;em&gt;posix_home&lt;/em&gt;: scheme for Posix platforms used when a &lt;em&gt;home&lt;/em&gt; option is used
upon installation.  This scheme is used when a component is installed through
Distutils with a specific home prefix.&lt;/li&gt;
&lt;li&gt;&lt;em&gt;posix_user&lt;/em&gt;: scheme for Posix platforms used when a component is installed
through Distutils and the &lt;em&gt;user&lt;/em&gt; option is used.  This scheme defines paths
located under the user home directory.&lt;/li&gt;
&lt;li&gt;&lt;em&gt;nt&lt;/em&gt;: scheme for NT platforms like Windows.&lt;/li&gt;
&lt;li&gt;&lt;em&gt;nt_user&lt;/em&gt;: scheme for NT platforms, when the &lt;em&gt;user&lt;/em&gt; option is used.&lt;/li&gt;
&lt;li&gt;&lt;em&gt;os2&lt;/em&gt;: scheme for OS/2 platforms.&lt;/li&gt;
&lt;li&gt;&lt;em&gt;os2_home&lt;/em&gt;: scheme for OS/2 patforms, when the &lt;em&gt;user&lt;/em&gt; option is used.&lt;/li&gt;
&lt;/ul&gt;
&lt;p&gt;Each scheme is itself composed of a series of paths and each path has a unique
identifier.  Python currently uses eight paths:&lt;/p&gt;
&lt;ul class=&quot;simple&quot;&gt;
&lt;li&gt;&lt;em&gt;stdlib&lt;/em&gt;: directory containing the standard Python library files that are not
platform-specific.&lt;/li&gt;
&lt;li&gt;&lt;em&gt;platstdlib&lt;/em&gt;: directory containing the standard Python library files that are
platform-specific.&lt;/li&gt;
&lt;li&gt;&lt;em&gt;platlib&lt;/em&gt;: directory for site-specific, platform-specific files.&lt;/li&gt;
&lt;li&gt;&lt;em&gt;purelib&lt;/em&gt;: directory for site-specific, non-platform-specific files.&lt;/li&gt;
&lt;li&gt;&lt;em&gt;include&lt;/em&gt;: directory for non-platform-specific header files.&lt;/li&gt;
&lt;li&gt;&lt;em&gt;platinclude&lt;/em&gt;: directory for platform-specific header files.&lt;/li&gt;
&lt;li&gt;&lt;em&gt;scripts&lt;/em&gt;: directory for script files.&lt;/li&gt;
&lt;li&gt;&lt;em&gt;data&lt;/em&gt;: directory for data files.&lt;/li&gt;
&lt;/ul&gt;
&lt;p&gt;&lt;a class=&quot;reference internal&quot; href=&quot;#module-sysconfig&quot; title=&quot;sysconfig: Python's configuration information&quot;&gt;&lt;tt class=&quot;xref py py-mod docutils literal&quot;&gt;&lt;span class=&quot;pre&quot;&gt;sysconfig&lt;/span&gt;&lt;/tt&gt;&lt;/a&gt; provides some functions to determine these paths.&lt;/p&gt;
&lt;dl class=&quot;function&quot;&gt;
&lt;dt id=&quot;sysconfig.get_scheme_names&quot;&gt;
&lt;tt class=&quot;descclassname&quot;&gt;sysconfig.&lt;/tt&gt;&lt;tt class=&quot;descname&quot;&gt;get_scheme_names&lt;/tt&gt;&lt;big&gt;(&lt;/big&gt;&lt;big&gt;)&lt;/big&gt;&lt;a class=&quot;headerlink&quot; href=&quot;#sysconfig.get_scheme_names&quot; title=&quot;Permalink to this definition&quot;&gt;¶&lt;/a&gt;&lt;/dt&gt;
&lt;dd&gt;&lt;p&gt;Return a tuple containing all schemes currently supported in
&lt;a class=&quot;reference internal&quot; href=&quot;#module-sysconfig&quot; title=&quot;sysconfig: Python's configuration information&quot;&gt;&lt;tt class=&quot;xref py py-mod docutils literal&quot;&gt;&lt;span class=&quot;pre&quot;&gt;sysconfig&lt;/span&gt;&lt;/tt&gt;&lt;/a&gt;.&lt;/p&gt;
&lt;/dd&gt;&lt;/dl&gt;

&lt;dl class=&quot;function&quot;&gt;
&lt;dt id=&quot;sysconfig.get_path_names&quot;&gt;
&lt;tt class=&quot;descclassname&quot;&gt;sysconfig.&lt;/tt&gt;&lt;tt class=&quot;descname&quot;&gt;get_path_names&lt;/tt&gt;&lt;big&gt;(&lt;/big&gt;&lt;big&gt;)&lt;/big&gt;&lt;a class=&quot;headerlink&quot; href=&quot;#sysconfig.get_path_names&quot; title=&quot;Permalink to this definition&quot;&gt;¶&lt;/a&gt;&lt;/dt&gt;
&lt;dd&gt;&lt;p&gt;Return a tuple containing all path names currently supported in
&lt;a class=&quot;reference internal&quot; href=&quot;#module-sysconfig&quot; title=&quot;sysconfig: Python's configuration information&quot;&gt;&lt;tt class=&quot;xref py py-mod docutils literal&quot;&gt;&lt;span class=&quot;pre&quot;&gt;sysconfig&lt;/span&gt;&lt;/tt&gt;&lt;/a&gt;.&lt;/p&gt;
&lt;/dd&gt;&lt;/dl&gt;

&lt;dl class=&quot;function&quot;&gt;
&lt;dt id=&quot;sysconfig.get_path&quot;&gt;
&lt;tt class=&quot;descclassname&quot;&gt;sysconfig.&lt;/tt&gt;&lt;tt class=&quot;descname&quot;&gt;get_path&lt;/tt&gt;&lt;big&gt;(&lt;/big&gt;&lt;em&gt;name&lt;/em&gt;&lt;span class=&quot;optional&quot;&gt;[&lt;/span&gt;, &lt;em&gt;scheme&lt;/em&gt;&lt;span class=&quot;optional&quot;&gt;[&lt;/span&gt;, &lt;em&gt;vars&lt;/em&gt;&lt;span class=&quot;optional&quot;&gt;[&lt;/span&gt;, &lt;em&gt;expand&lt;/em&gt;&lt;span class=&quot;optional&quot;&gt;]&lt;/span&gt;&lt;span class=&quot;optional&quot;&gt;]&lt;/span&gt;&lt;span class=&quot;optional&quot;&gt;]&lt;/span&gt;&lt;big&gt;)&lt;/big&gt;&lt;a class=&quot;headerlink&quot; href=&quot;#sysconfig.get_path&quot; title=&quot;Permalink to this definition&quot;&gt;¶&lt;/a&gt;&lt;/dt&gt;
&lt;dd&gt;&lt;p&gt;Return an installation path corresponding to the path &lt;em&gt;name&lt;/em&gt;, from the
install scheme named &lt;em&gt;scheme&lt;/em&gt;.&lt;/p&gt;
&lt;p&gt;&lt;em&gt;name&lt;/em&gt; has to be a value from the list returned by &lt;a class=&quot;reference internal&quot; href=&quot;#sysconfig.get_path_names&quot; title=&quot;sysconfig.get_path_names&quot;&gt;&lt;tt class=&quot;xref py py-func docutils literal&quot;&gt;&lt;span class=&quot;pre&quot;&gt;get_path_names()&lt;/span&gt;&lt;/tt&gt;&lt;/a&gt;.&lt;/p&gt;
&lt;p&gt;&lt;a class=&quot;reference internal&quot; href=&quot;#module-sysconfig&quot; title=&quot;sysconfig: Python's configuration information&quot;&gt;&lt;tt class=&quot;xref py py-mod docutils literal&quot;&gt;&lt;span class=&quot;pre&quot;&gt;sysconfig&lt;/span&gt;&lt;/tt&gt;&lt;/a&gt; stores installation paths corresponding to each path name,
for each platform, with variables to be expanded.  For instance the &lt;em&gt;stdlib&lt;/em&gt;
path for the &lt;em&gt;nt&lt;/em&gt; scheme is: &lt;tt class=&quot;docutils literal&quot;&gt;&lt;span class=&quot;pre&quot;&gt;{base}/Lib&lt;/span&gt;&lt;/tt&gt;.&lt;/p&gt;
&lt;p&gt;&lt;a class=&quot;reference internal&quot; href=&quot;#sysconfig.get_path&quot; title=&quot;sysconfig.get_path&quot;&gt;&lt;tt class=&quot;xref py py-func docutils literal&quot;&gt;&lt;span class=&quot;pre&quot;&gt;get_path()&lt;/span&gt;&lt;/tt&gt;&lt;/a&gt; will use the variables returned by &lt;a class=&quot;reference internal&quot; href=&quot;#sysconfig.get_config_vars&quot; title=&quot;sysconfig.get_config_vars&quot;&gt;&lt;tt class=&quot;xref py py-func docutils literal&quot;&gt;&lt;span class=&quot;pre&quot;&gt;get_config_vars()&lt;/span&gt;&lt;/tt&gt;&lt;/a&gt;
to expand the path.  All variables have default values for each platform so
one may call this function and get the default value.&lt;/p&gt;
&lt;p&gt;If &lt;em&gt;scheme&lt;/em&gt; is provided, it must be a value from the list returned by
&lt;a class=&quot;reference internal&quot; href=&quot;#sysconfig.get_scheme_names&quot; title=&quot;sysconfig.get_scheme_names&quot;&gt;&lt;tt class=&quot;xref py py-func docutils literal&quot;&gt;&lt;span class=&quot;pre&quot;&gt;get_scheme_names()&lt;/span&gt;&lt;/tt&gt;&lt;/a&gt;.  Otherwise, the default scheme for the current
platform is used.&lt;/p&gt;
&lt;p&gt;If &lt;em&gt;vars&lt;/em&gt; is provided, it must be a dictionary of variables that will update
the dictionary return by &lt;a class=&quot;reference internal&quot; href=&quot;#sysconfig.get_config_vars&quot; title=&quot;sysconfig.get_config_vars&quot;&gt;&lt;tt class=&quot;xref py py-func docutils literal&quot;&gt;&lt;span class=&quot;pre&quot;&gt;get_config_vars()&lt;/span&gt;&lt;/tt&gt;&lt;/a&gt;.&lt;/p&gt;
&lt;p&gt;If &lt;em&gt;expand&lt;/em&gt; is set to &lt;tt class=&quot;docutils literal&quot;&gt;&lt;span class=&quot;pre&quot;&gt;False&lt;/span&gt;&lt;/tt&gt;, the path will not be expanded using the
variables.&lt;/p&gt;
&lt;p&gt;If &lt;em&gt;name&lt;/em&gt; is not found, return &lt;tt class=&quot;docutils literal&quot;&gt;&lt;span class=&quot;pre&quot;&gt;None&lt;/span&gt;&lt;/tt&gt;.&lt;/p&gt;
&lt;/dd&gt;&lt;/dl&gt;

&lt;dl class=&quot;function&quot;&gt;
&lt;dt id=&quot;sysconfig.get_paths&quot;&gt;
&lt;tt class=&quot;descclassname&quot;&gt;sysconfig.&lt;/tt&gt;&lt;tt class=&quot;descname&quot;&gt;get_paths&lt;/tt&gt;&lt;big&gt;(&lt;/big&gt;&lt;span class=&quot;optional&quot;&gt;[&lt;/span&gt;&lt;em&gt;scheme&lt;/em&gt;&lt;span class=&quot;optional&quot;&gt;[&lt;/span&gt;, &lt;em&gt;vars&lt;/em&gt;&lt;span class=&quot;optional&quot;&gt;[&lt;/span&gt;, &lt;em&gt;expand&lt;/em&gt;&lt;span class=&quot;optional&quot;&gt;]&lt;/span&gt;&lt;span class=&quot;optional&quot;&gt;]&lt;/span&gt;&lt;span class=&quot;optional&quot;&gt;]&lt;/span&gt;&lt;big&gt;)&lt;/big&gt;&lt;a class=&quot;headerlink&quot; href=&quot;#sysconfig.get_paths&quot; title=&quot;Permalink to this definition&quot;&gt;¶&lt;/a&gt;&lt;/dt&gt;
&lt;dd&gt;&lt;p&gt;Return a dictionary containing all installation paths corresponding to an
installation scheme. See &lt;a class=&quot;reference internal&quot; href=&quot;#sysconfig.get_path&quot; title=&quot;sysconfig.get_path&quot;&gt;&lt;tt class=&quot;xref py py-func docutils literal&quot;&gt;&lt;span class=&quot;pre&quot;&gt;get_path()&lt;/span&gt;&lt;/tt&gt;&lt;/a&gt; for more information.&lt;/p&gt;
&lt;p&gt;If &lt;em&gt;scheme&lt;/em&gt; is not provided, will use the default scheme for the current
platform.&lt;/p&gt;
&lt;p&gt;If &lt;em&gt;vars&lt;/em&gt; is provided, it must be a dictionary of variables that will
update the dictionary used to expand the paths.&lt;/p&gt;
&lt;p&gt;If &lt;em&gt;expand&lt;/em&gt; is set to False, the paths will not be expanded.&lt;/p&gt;
&lt;p&gt;If &lt;em&gt;scheme&lt;/em&gt; is not an existing scheme, &lt;a class=&quot;reference internal&quot; href=&quot;#sysconfig.get_paths&quot; title=&quot;sysconfig.get_paths&quot;&gt;&lt;tt class=&quot;xref py py-func docutils literal&quot;&gt;&lt;span class=&quot;pre&quot;&gt;get_paths()&lt;/span&gt;&lt;/tt&gt;&lt;/a&gt; will raise a
&lt;a class=&quot;reference internal&quot; href=&quot;exceptions.html#exceptions.KeyError&quot; title=&quot;exceptions.KeyError&quot;&gt;&lt;tt class=&quot;xref py py-exc docutils literal&quot;&gt;&lt;span class=&quot;pre&quot;&gt;KeyError&lt;/span&gt;&lt;/tt&gt;&lt;/a&gt;.&lt;/p&gt;
&lt;/dd&gt;&lt;/dl&gt;

&lt;/div&gt;
&lt;div class=&quot;section&quot; id=&quot;other-functions&quot;&gt;
&lt;h2&gt;27.2.3. Other functions&lt;a class=&quot;headerlink&quot; href=&quot;#other-functions&quot; title=&quot;Permalink to this headline&quot;&gt;¶&lt;/a&gt;&lt;/h2&gt;
&lt;dl class=&quot;function&quot;&gt;
&lt;dt id=&quot;sysconfig.get_python_version&quot;&gt;
&lt;tt class=&quot;descclassname&quot;&gt;sysconfig.&lt;/tt&gt;&lt;tt class=&quot;descname&quot;&gt;get_python_version&lt;/tt&gt;&lt;big&gt;(&lt;/big&gt;&lt;big&gt;)&lt;/big&gt;&lt;a class=&quot;headerlink&quot; href=&quot;#sysconfig.get_python_version&quot; title=&quot;Permalink to this definition&quot;&gt;¶&lt;/a&gt;&lt;/dt&gt;
&lt;dd&gt;&lt;p&gt;Return the &lt;tt class=&quot;docutils literal&quot;&gt;&lt;span class=&quot;pre&quot;&gt;MAJOR.MINOR&lt;/span&gt;&lt;/tt&gt; Python version number as a string.  Similar to
&lt;tt class=&quot;docutils literal&quot;&gt;&lt;span class=&quot;pre&quot;&gt;sys.version[:3]&lt;/span&gt;&lt;/tt&gt;.&lt;/p&gt;
&lt;/dd&gt;&lt;/dl&gt;

&lt;dl class=&quot;function&quot;&gt;
&lt;dt id=&quot;sysconfig.get_platform&quot;&gt;
&lt;tt class=&quot;descclassname&quot;&gt;sysconfig.&lt;/tt&gt;&lt;tt class=&quot;descname&quot;&gt;get_platform&lt;/tt&gt;&lt;big&gt;(&lt;/big&gt;&lt;big&gt;)&lt;/big&gt;&lt;a class=&quot;headerlink&quot; href=&quot;#sysconfig.get_platform&quot; title=&quot;Permalink to this definition&quot;&gt;¶&lt;/a&gt;&lt;/dt&gt;
&lt;dd&gt;&lt;p&gt;Return a string that identifies the current platform.&lt;/p&gt;
&lt;p&gt;This is used mainly to distinguish platform-specific build directories and
platform-specific built distributions.  Typically includes the OS name and
version and the architecture (as supplied by &lt;a class=&quot;reference internal&quot; href=&quot;os.html#os.uname&quot; title=&quot;os.uname&quot;&gt;&lt;tt class=&quot;xref py py-func docutils literal&quot;&gt;&lt;span class=&quot;pre&quot;&gt;os.uname()&lt;/span&gt;&lt;/tt&gt;&lt;/a&gt;), although the
exact information included depends on the OS; e.g. for IRIX the architecture
isn&amp;#8217;t particularly important (IRIX only runs on SGI hardware), but for Linux
the kernel version isn&amp;#8217;t particularly important.&lt;/p&gt;
&lt;p&gt;Examples of returned values:&lt;/p&gt;
&lt;ul class=&quot;simple&quot;&gt;
&lt;li&gt;linux-i586&lt;/li&gt;
&lt;li&gt;linux-alpha (?)&lt;/li&gt;
&lt;li&gt;solaris-2.6-sun4u&lt;/li&gt;
&lt;li&gt;irix-5.3&lt;/li&gt;
&lt;li&gt;irix64-6.2&lt;/li&gt;
&lt;/ul&gt;
&lt;p&gt;Windows will return one of:&lt;/p&gt;
&lt;ul class=&quot;simple&quot;&gt;
&lt;li&gt;win-amd64 (64bit Windows on AMD64 (aka x86_64, Intel64, EM64T, etc)&lt;/li&gt;
&lt;li&gt;win-ia64 (64bit Windows on Itanium)&lt;/li&gt;
&lt;li&gt;win32 (all others - specifically, sys.platform is returned)&lt;/li&gt;
&lt;/ul&gt;
&lt;p&gt;Mac OS X can return:&lt;/p&gt;
&lt;ul class=&quot;simple&quot;&gt;
&lt;li&gt;macosx-10.6-ppc&lt;/li&gt;
&lt;li&gt;macosx-10.4-ppc64&lt;/li&gt;
&lt;li&gt;macosx-10.3-i386&lt;/li&gt;
&lt;li&gt;macosx-10.4-fat&lt;/li&gt;
&lt;/ul&gt;
&lt;p&gt;For other non-POSIX platforms, currently just returns &lt;a class=&quot;reference internal&quot; href=&quot;sys.html#sys.platform&quot; title=&quot;sys.platform&quot;&gt;&lt;tt class=&quot;xref py py-data docutils literal&quot;&gt;&lt;span class=&quot;pre&quot;&gt;sys.platform&lt;/span&gt;&lt;/tt&gt;&lt;/a&gt;.&lt;/p&gt;
&lt;/dd&gt;&lt;/dl&gt;

&lt;dl class=&quot;function&quot;&gt;
&lt;dt id=&quot;sysconfig.is_python_build&quot;&gt;
&lt;tt class=&quot;descclassname&quot;&gt;sysconfig.&lt;/tt&gt;&lt;tt class=&quot;descname&quot;&gt;is_python_build&lt;/tt&gt;&lt;big&gt;(&lt;/big&gt;&lt;big&gt;)&lt;/big&gt;&lt;a class=&quot;headerlink&quot; href=&quot;#sysconfig.is_python_build&quot; title=&quot;Permalink to this definition&quot;&gt;¶&lt;/a&gt;&lt;/dt&gt;
&lt;dd&gt;&lt;p&gt;Return &lt;tt class=&quot;docutils literal&quot;&gt;&lt;span class=&quot;pre&quot;&gt;True&lt;/span&gt;&lt;/tt&gt; if the current Python installation was built from source.&lt;/p&gt;
&lt;/dd&gt;&lt;/dl&gt;

&lt;dl class=&quot;function&quot;&gt;
&lt;dt id=&quot;sysconfig.parse_config_h&quot;&gt;
&lt;tt class=&quot;descclassname&quot;&gt;sysconfig.&lt;/tt&gt;&lt;tt class=&quot;descname&quot;&gt;parse_config_h&lt;/tt&gt;&lt;big&gt;(&lt;/big&gt;&lt;em&gt;fp&lt;/em&gt;&lt;span class=&quot;optional&quot;&gt;[&lt;/span&gt;, &lt;em&gt;vars&lt;/em&gt;&lt;span class=&quot;optional&quot;&gt;]&lt;/span&gt;&lt;big&gt;)&lt;/big&gt;&lt;a class=&quot;headerlink&quot; href=&quot;#sysconfig.parse_config_h&quot; title=&quot;Permalink to this definition&quot;&gt;¶&lt;/a&gt;&lt;/dt&gt;
&lt;dd&gt;&lt;p&gt;Parse a &lt;tt class=&quot;file docutils literal&quot;&gt;&lt;span class=&quot;pre&quot;&gt;config.h&lt;/span&gt;&lt;/tt&gt;-style file.&lt;/p&gt;
&lt;p&gt;&lt;em&gt;fp&lt;/em&gt; is a file-like object pointing to the &lt;tt class=&quot;file docutils literal&quot;&gt;&lt;span class=&quot;pre&quot;&gt;config.h&lt;/span&gt;&lt;/tt&gt;-like file.&lt;/p&gt;
&lt;p&gt;A dictionary containing name/value pairs is returned.  If an optional
dictionary is passed in as the second argument, it is used instead of a new
dictionary, and updated with the values read in the file.&lt;/p&gt;
&lt;/dd&gt;&lt;/dl&gt;

&lt;dl class=&quot;function&quot;&gt;
&lt;dt id=&quot;sysconfig.get_config_h_filename&quot;&gt;
&lt;tt class=&quot;descclassname&quot;&gt;sysconfig.&lt;/tt&gt;&lt;tt class=&quot;descname&quot;&gt;get_config_h_filename&lt;/tt&gt;&lt;big&gt;(&lt;/big&gt;&lt;big&gt;)&lt;/big&gt;&lt;a class=&quot;headerlink&quot; href=&quot;#sysconfig.get_config_h_filename&quot; title=&quot;Permalink to this definition&quot;&gt;¶&lt;/a&gt;&lt;/dt&gt;
&lt;dd&gt;&lt;p&gt;Return the path of &lt;tt class=&quot;file docutils literal&quot;&gt;&lt;span class=&quot;pre&quot;&gt;pyconfig.h&lt;/span&gt;&lt;/tt&gt;.&lt;/p&gt;
&lt;/dd&gt;&lt;/dl&gt;

&lt;/div&gt;
&lt;/div&gt;


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  &lt;h3&gt;&lt;a href=&quot;../contents.html&quot;&gt;Table Of Contents&lt;/a&gt;&lt;/h3&gt;
  &lt;ul&gt;
&lt;li&gt;&lt;a class=&quot;reference internal&quot; href=&quot;#&quot;&gt;27.2. &lt;tt class=&quot;docutils literal&quot;&gt;&lt;span class=&quot;pre&quot;&gt;sysconfig&lt;/span&gt;&lt;/tt&gt; &amp;#8212; Provide access to Python&amp;#8217;s configuration information&lt;/a&gt;&lt;ul&gt;
&lt;li&gt;&lt;a class=&quot;reference internal&quot; href=&quot;#configuration-variables&quot;&gt;27.2.1. Configuration variables&lt;/a&gt;&lt;/li&gt;
&lt;li&gt;&lt;a class=&quot;reference internal&quot; href=&quot;#installation-paths&quot;&gt;27.2.2. Installation paths&lt;/a&gt;&lt;/li&gt;
&lt;li&gt;&lt;a class=&quot;reference internal&quot; href=&quot;#other-functions&quot;&gt;27.2.3. Other functions&lt;/a&gt;&lt;/li&gt;
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