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  &lt;div class=&quot;section&quot; id=&quot;module-compileall&quot;&gt;
&lt;span id=&quot;compileall-byte-compile-python-libraries&quot;&gt;&lt;/span&gt;&lt;h1&gt;31.11. &lt;a class=&quot;reference internal&quot; href=&quot;#module-compileall&quot; title=&quot;compileall: Tools for byte-compiling all Python source files in a directory tree.&quot;&gt;&lt;tt class=&quot;xref py py-mod docutils literal&quot;&gt;&lt;span class=&quot;pre&quot;&gt;compileall&lt;/span&gt;&lt;/tt&gt;&lt;/a&gt; &amp;#8212; Byte-compile Python libraries&lt;a class=&quot;headerlink&quot; href=&quot;#module-compileall&quot; title=&quot;Permalink to this headline&quot;&gt;¶&lt;/a&gt;&lt;/h1&gt;
&lt;p&gt;This module provides some utility functions to support installing Python
libraries.  These functions compile Python source files in a directory tree.
This module can be used to create the cached byte-code files at library
installation time, which makes them available for use even by users who don&amp;#8217;t
have write permission to the library directories.&lt;/p&gt;
&lt;div class=&quot;section&quot; id=&quot;command-line-use&quot;&gt;
&lt;h2&gt;31.11.1. Command-line use&lt;a class=&quot;headerlink&quot; href=&quot;#command-line-use&quot; title=&quot;Permalink to this headline&quot;&gt;¶&lt;/a&gt;&lt;/h2&gt;
&lt;p&gt;This module can work as a script (using &lt;strong class=&quot;program&quot;&gt;python -m compileall&lt;/strong&gt;) to
compile Python sources.&lt;/p&gt;
&lt;dl class=&quot;cmdoption&quot;&gt;
&lt;dt&gt;
&lt;tt class=&quot;descname&quot;&gt;[directory|file]...&lt;/tt&gt;&lt;/dt&gt;
&lt;dd&gt;&lt;p&gt;Positional arguments are files to compile or directories that contain
source files, traversed recursively.  If no argument is given, behave as if
the command line was &lt;tt class=&quot;docutils literal&quot;&gt;&lt;span class=&quot;pre&quot;&gt;-l&lt;/span&gt; &lt;span class=&quot;pre&quot;&gt;&amp;lt;directories&lt;/span&gt; &lt;span class=&quot;pre&quot;&gt;from&lt;/span&gt; &lt;span class=&quot;pre&quot;&gt;sys.path&amp;gt;&lt;/span&gt;&lt;/tt&gt;.&lt;/p&gt;
&lt;/dd&gt;&lt;/dl&gt;

&lt;dl class=&quot;cmdoption&quot;&gt;
&lt;dt id=&quot;cmdoption-compileall-l&quot;&gt;
&lt;tt class=&quot;descname&quot;&gt;-l&lt;/tt&gt;&lt;tt class=&quot;descclassname&quot;&gt;&lt;/tt&gt;&lt;a class=&quot;headerlink&quot; href=&quot;#cmdoption-compileall-l&quot; title=&quot;Permalink to this definition&quot;&gt;¶&lt;/a&gt;&lt;/dt&gt;
&lt;dd&gt;&lt;p&gt;Do not recurse into subdirectories, only compile source code files directly
contained in the named or implied directories.&lt;/p&gt;
&lt;/dd&gt;&lt;/dl&gt;

&lt;dl class=&quot;cmdoption&quot;&gt;
&lt;dt id=&quot;cmdoption-compileall-f&quot;&gt;
&lt;tt class=&quot;descname&quot;&gt;-f&lt;/tt&gt;&lt;tt class=&quot;descclassname&quot;&gt;&lt;/tt&gt;&lt;a class=&quot;headerlink&quot; href=&quot;#cmdoption-compileall-f&quot; title=&quot;Permalink to this definition&quot;&gt;¶&lt;/a&gt;&lt;/dt&gt;
&lt;dd&gt;&lt;p&gt;Force rebuild even if timestamps are up-to-date.&lt;/p&gt;
&lt;/dd&gt;&lt;/dl&gt;

&lt;dl class=&quot;cmdoption&quot;&gt;
&lt;dt id=&quot;cmdoption-compileall-q&quot;&gt;
&lt;tt class=&quot;descname&quot;&gt;-q&lt;/tt&gt;&lt;tt class=&quot;descclassname&quot;&gt;&lt;/tt&gt;&lt;a class=&quot;headerlink&quot; href=&quot;#cmdoption-compileall-q&quot; title=&quot;Permalink to this definition&quot;&gt;¶&lt;/a&gt;&lt;/dt&gt;
&lt;dd&gt;&lt;p&gt;Do not print the list of files compiled, print only error messages.&lt;/p&gt;
&lt;/dd&gt;&lt;/dl&gt;

&lt;dl class=&quot;cmdoption&quot;&gt;
&lt;dt id=&quot;cmdoption-compileall-d&quot;&gt;
&lt;tt class=&quot;descname&quot;&gt;-d&lt;/tt&gt;&lt;tt class=&quot;descclassname&quot;&gt; destdir&lt;/tt&gt;&lt;a class=&quot;headerlink&quot; href=&quot;#cmdoption-compileall-d&quot; title=&quot;Permalink to this definition&quot;&gt;¶&lt;/a&gt;&lt;/dt&gt;
&lt;dd&gt;&lt;p&gt;Directory prepended to the path to each file being compiled.  This will
appear in compilation time tracebacks, and is also compiled in to the
byte-code file, where it will be used in tracebacks and other messages in
cases where the source file does not exist at the time the byte-code file is
executed.&lt;/p&gt;
&lt;/dd&gt;&lt;/dl&gt;

&lt;dl class=&quot;cmdoption&quot;&gt;
&lt;dt id=&quot;cmdoption-compileall-x&quot;&gt;
&lt;tt class=&quot;descname&quot;&gt;-x&lt;/tt&gt;&lt;tt class=&quot;descclassname&quot;&gt; regex&lt;/tt&gt;&lt;a class=&quot;headerlink&quot; href=&quot;#cmdoption-compileall-x&quot; title=&quot;Permalink to this definition&quot;&gt;¶&lt;/a&gt;&lt;/dt&gt;
&lt;dd&gt;&lt;p&gt;regex is used to search the full path to each file considered for
compilation, and if the regex produces a match, the file is skipped.&lt;/p&gt;
&lt;/dd&gt;&lt;/dl&gt;

&lt;dl class=&quot;cmdoption&quot;&gt;
&lt;dt id=&quot;cmdoption-compileall-i&quot;&gt;
&lt;tt class=&quot;descname&quot;&gt;-i&lt;/tt&gt;&lt;tt class=&quot;descclassname&quot;&gt; list&lt;/tt&gt;&lt;a class=&quot;headerlink&quot; href=&quot;#cmdoption-compileall-i&quot; title=&quot;Permalink to this definition&quot;&gt;¶&lt;/a&gt;&lt;/dt&gt;
&lt;dd&gt;&lt;p&gt;Read the file &lt;tt class=&quot;docutils literal&quot;&gt;&lt;span class=&quot;pre&quot;&gt;list&lt;/span&gt;&lt;/tt&gt; and add each line that it contains to the list of
files and directories to compile.  If &lt;tt class=&quot;docutils literal&quot;&gt;&lt;span class=&quot;pre&quot;&gt;list&lt;/span&gt;&lt;/tt&gt; is &lt;tt class=&quot;docutils literal&quot;&gt;&lt;span class=&quot;pre&quot;&gt;-&lt;/span&gt;&lt;/tt&gt;, read lines from
&lt;tt class=&quot;docutils literal&quot;&gt;&lt;span class=&quot;pre&quot;&gt;stdin&lt;/span&gt;&lt;/tt&gt;.&lt;/p&gt;
&lt;/dd&gt;&lt;/dl&gt;

&lt;p class=&quot;versionchanged&quot;&gt;
&lt;span class=&quot;versionmodified&quot;&gt;Changed in version 2.7: &lt;/span&gt;Added the &lt;tt class=&quot;docutils literal&quot;&gt;&lt;span class=&quot;pre&quot;&gt;-i&lt;/span&gt;&lt;/tt&gt;  option.&lt;/p&gt;
&lt;/div&gt;
&lt;div class=&quot;section&quot; id=&quot;public-functions&quot;&gt;
&lt;h2&gt;31.11.2. Public functions&lt;a class=&quot;headerlink&quot; href=&quot;#public-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;compileall.compile_dir&quot;&gt;
&lt;tt class=&quot;descclassname&quot;&gt;compileall.&lt;/tt&gt;&lt;tt class=&quot;descname&quot;&gt;compile_dir&lt;/tt&gt;&lt;big&gt;(&lt;/big&gt;&lt;em&gt;dir&lt;/em&gt;&lt;span class=&quot;optional&quot;&gt;[&lt;/span&gt;, &lt;em&gt;maxlevels&lt;/em&gt;&lt;span class=&quot;optional&quot;&gt;[&lt;/span&gt;, &lt;em&gt;ddir&lt;/em&gt;&lt;span class=&quot;optional&quot;&gt;[&lt;/span&gt;, &lt;em&gt;force&lt;/em&gt;&lt;span class=&quot;optional&quot;&gt;[&lt;/span&gt;, &lt;em&gt;rx&lt;/em&gt;&lt;span class=&quot;optional&quot;&gt;[&lt;/span&gt;, &lt;em&gt;quiet&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;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;#compileall.compile_dir&quot; title=&quot;Permalink to this definition&quot;&gt;¶&lt;/a&gt;&lt;/dt&gt;
&lt;dd&gt;&lt;p&gt;Recursively descend the directory tree named by &lt;em&gt;dir&lt;/em&gt;, compiling all &lt;tt class=&quot;file docutils literal&quot;&gt;&lt;span class=&quot;pre&quot;&gt;.py&lt;/span&gt;&lt;/tt&gt;
files along the way.&lt;/p&gt;
&lt;p&gt;The &lt;em&gt;maxlevels&lt;/em&gt; parameter is used to limit the depth of the recursion; it
defaults to &lt;tt class=&quot;docutils literal&quot;&gt;&lt;span class=&quot;pre&quot;&gt;10&lt;/span&gt;&lt;/tt&gt;.&lt;/p&gt;
&lt;p&gt;If &lt;em&gt;ddir&lt;/em&gt; is given, it is prepended to the path to each file being compiled
for use in compilation time tracebacks, and is also compiled in to the
byte-code file, where it will be used in tracebacks and other messages in
cases where the source file does not exist at the time the byte-code file is
executed.&lt;/p&gt;
&lt;p&gt;If &lt;em&gt;force&lt;/em&gt; is true, modules are re-compiled even if the timestamps are up to
date.&lt;/p&gt;
&lt;p&gt;If &lt;em&gt;rx&lt;/em&gt; is given, its search method is called on the complete path to each
file considered for compilation, and if it returns a true value, the file
is skipped.&lt;/p&gt;
&lt;p&gt;If &lt;em&gt;quiet&lt;/em&gt; is true, nothing is printed to the standard output unless errors
occur.&lt;/p&gt;
&lt;/dd&gt;&lt;/dl&gt;

&lt;dl class=&quot;function&quot;&gt;
&lt;dt id=&quot;compileall.compile_file&quot;&gt;
&lt;tt class=&quot;descclassname&quot;&gt;compileall.&lt;/tt&gt;&lt;tt class=&quot;descname&quot;&gt;compile_file&lt;/tt&gt;&lt;big&gt;(&lt;/big&gt;&lt;em&gt;fullname&lt;/em&gt;&lt;span class=&quot;optional&quot;&gt;[&lt;/span&gt;, &lt;em&gt;ddir&lt;/em&gt;&lt;span class=&quot;optional&quot;&gt;[&lt;/span&gt;, &lt;em&gt;force&lt;/em&gt;&lt;span class=&quot;optional&quot;&gt;[&lt;/span&gt;, &lt;em&gt;rx&lt;/em&gt;&lt;span class=&quot;optional&quot;&gt;[&lt;/span&gt;, &lt;em&gt;quiet&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;span class=&quot;optional&quot;&gt;]&lt;/span&gt;&lt;big&gt;)&lt;/big&gt;&lt;a class=&quot;headerlink&quot; href=&quot;#compileall.compile_file&quot; title=&quot;Permalink to this definition&quot;&gt;¶&lt;/a&gt;&lt;/dt&gt;
&lt;dd&gt;&lt;p&gt;Compile the file with path &lt;em&gt;fullname&lt;/em&gt;.&lt;/p&gt;
&lt;p&gt;If &lt;em&gt;ddir&lt;/em&gt; is given, it is prepended to the path to the file being compiled
for use in compilation time tracebacks, and is also compiled in to the
byte-code file, where it will be used in tracebacks and other messages in
cases where the source file does not exist at the time the byte-code file is
executed.&lt;/p&gt;
&lt;p&gt;If &lt;em&gt;rx&lt;/em&gt; is given, its search method is passed the full path name to the
file being compiled, and if it returns a true value, the file is not
compiled and &lt;tt class=&quot;docutils literal&quot;&gt;&lt;span class=&quot;pre&quot;&gt;True&lt;/span&gt;&lt;/tt&gt; is returned.&lt;/p&gt;
&lt;p&gt;If &lt;em&gt;quiet&lt;/em&gt; is true, nothing is printed to the standard output unless errors
occur.&lt;/p&gt;
&lt;p class=&quot;versionadded&quot;&gt;
&lt;span class=&quot;versionmodified&quot;&gt;New in version 2.7.&lt;/span&gt;&lt;/p&gt;
&lt;/dd&gt;&lt;/dl&gt;

&lt;dl class=&quot;function&quot;&gt;
&lt;dt id=&quot;compileall.compile_path&quot;&gt;
&lt;tt class=&quot;descclassname&quot;&gt;compileall.&lt;/tt&gt;&lt;tt class=&quot;descname&quot;&gt;compile_path&lt;/tt&gt;&lt;big&gt;(&lt;/big&gt;&lt;span class=&quot;optional&quot;&gt;[&lt;/span&gt;&lt;em&gt;skip_curdir&lt;/em&gt;&lt;span class=&quot;optional&quot;&gt;[&lt;/span&gt;, &lt;em&gt;maxlevels&lt;/em&gt;&lt;span class=&quot;optional&quot;&gt;[&lt;/span&gt;, &lt;em&gt;force&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;#compileall.compile_path&quot; title=&quot;Permalink to this definition&quot;&gt;¶&lt;/a&gt;&lt;/dt&gt;
&lt;dd&gt;&lt;p&gt;Byte-compile all the &lt;tt class=&quot;file docutils literal&quot;&gt;&lt;span class=&quot;pre&quot;&gt;.py&lt;/span&gt;&lt;/tt&gt; files found along &lt;tt class=&quot;docutils literal&quot;&gt;&lt;span class=&quot;pre&quot;&gt;sys.path&lt;/span&gt;&lt;/tt&gt;. If
&lt;em&gt;skip_curdir&lt;/em&gt; is true (the default), the current directory is not included
in the search.  All other parameters are passed to the &lt;a class=&quot;reference internal&quot; href=&quot;#compileall.compile_dir&quot; title=&quot;compileall.compile_dir&quot;&gt;&lt;tt class=&quot;xref py py-func docutils literal&quot;&gt;&lt;span class=&quot;pre&quot;&gt;compile_dir()&lt;/span&gt;&lt;/tt&gt;&lt;/a&gt;
function.  Note that unlike the other compile functions, &lt;tt class=&quot;docutils literal&quot;&gt;&lt;span class=&quot;pre&quot;&gt;maxlevels&lt;/span&gt;&lt;/tt&gt;
defaults to &lt;tt class=&quot;docutils literal&quot;&gt;&lt;span class=&quot;pre&quot;&gt;0&lt;/span&gt;&lt;/tt&gt;.&lt;/p&gt;
&lt;/dd&gt;&lt;/dl&gt;

&lt;p&gt;To force a recompile of all the &lt;tt class=&quot;file docutils literal&quot;&gt;&lt;span class=&quot;pre&quot;&gt;.py&lt;/span&gt;&lt;/tt&gt; files in the &lt;tt class=&quot;file docutils literal&quot;&gt;&lt;span class=&quot;pre&quot;&gt;Lib/&lt;/span&gt;&lt;/tt&gt;
subdirectory and all its subdirectories:&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;kn&quot;&gt;import&lt;/span&gt; &lt;span class=&quot;nn&quot;&gt;compileall&lt;/span&gt;

&lt;span class=&quot;n&quot;&gt;compileall&lt;/span&gt;&lt;span class=&quot;o&quot;&gt;.&lt;/span&gt;&lt;span class=&quot;n&quot;&gt;compile_dir&lt;/span&gt;&lt;span class=&quot;p&quot;&gt;(&lt;/span&gt;&lt;span class=&quot;s&quot;&gt;&amp;#39;Lib/&amp;#39;&lt;/span&gt;&lt;span class=&quot;p&quot;&gt;,&lt;/span&gt; &lt;span class=&quot;n&quot;&gt;force&lt;/span&gt;&lt;span class=&quot;o&quot;&gt;=&lt;/span&gt;&lt;span class=&quot;bp&quot;&gt;True&lt;/span&gt;&lt;span class=&quot;p&quot;&gt;)&lt;/span&gt;

&lt;span class=&quot;c&quot;&gt;# Perform same compilation, excluding files in .svn directories.&lt;/span&gt;
&lt;span class=&quot;kn&quot;&gt;import&lt;/span&gt; &lt;span class=&quot;nn&quot;&gt;re&lt;/span&gt;
&lt;span class=&quot;n&quot;&gt;compileall&lt;/span&gt;&lt;span class=&quot;o&quot;&gt;.&lt;/span&gt;&lt;span class=&quot;n&quot;&gt;compile_dir&lt;/span&gt;&lt;span class=&quot;p&quot;&gt;(&lt;/span&gt;&lt;span class=&quot;s&quot;&gt;&amp;#39;Lib/&amp;#39;&lt;/span&gt;&lt;span class=&quot;p&quot;&gt;,&lt;/span&gt; &lt;span class=&quot;n&quot;&gt;rx&lt;/span&gt;&lt;span class=&quot;o&quot;&gt;=&lt;/span&gt;&lt;span class=&quot;n&quot;&gt;re&lt;/span&gt;&lt;span class=&quot;o&quot;&gt;.&lt;/span&gt;&lt;span class=&quot;n&quot;&gt;compile&lt;/span&gt;&lt;span class=&quot;p&quot;&gt;(&lt;/span&gt;&lt;span class=&quot;s&quot;&gt;r&amp;#39;[/&lt;/span&gt;&lt;span class=&quot;se&quot;&gt;\\&lt;/span&gt;&lt;span class=&quot;s&quot;&gt;][.]svn&amp;#39;&lt;/span&gt;&lt;span class=&quot;p&quot;&gt;),&lt;/span&gt; &lt;span class=&quot;n&quot;&gt;force&lt;/span&gt;&lt;span class=&quot;o&quot;&gt;=&lt;/span&gt;&lt;span class=&quot;bp&quot;&gt;True&lt;/span&gt;&lt;span class=&quot;p&quot;&gt;)&lt;/span&gt;
&lt;/pre&gt;&lt;/div&gt;
&lt;/div&gt;
&lt;div class=&quot;admonition-see-also admonition seealso&quot;&gt;
&lt;p class=&quot;first admonition-title&quot;&gt;See also&lt;/p&gt;
&lt;dl class=&quot;last docutils&quot;&gt;
&lt;dt&gt;Module &lt;a class=&quot;reference internal&quot; href=&quot;py_compile.html#module-py_compile&quot; title=&quot;py_compile: Generate byte-code files from Python source files.&quot;&gt;&lt;tt class=&quot;xref py py-mod docutils literal&quot;&gt;&lt;span class=&quot;pre&quot;&gt;py_compile&lt;/span&gt;&lt;/tt&gt;&lt;/a&gt;&lt;/dt&gt;
&lt;dd&gt;Byte-compile a single source file.&lt;/dd&gt;
&lt;/dl&gt;
&lt;/div&gt;
&lt;/div&gt;
&lt;/div&gt;


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