----- compileall MODULE -----
It is used to convert source files to byte-compiled version. The compileall module finds Python source files and compiles them to the byte-code representation, saving the results in .pyc or .pyo files.
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't have write permission to the library directories.
----- Compiling One Directory -----
compile_dir() is used to recursively scan a directory and byte-compile the files within it.
By default, all of the subdirectories are scanned to a depth of 10. When using a version
control system such as subversion, this can lead to unnecessary scanning, as seen here:
directories out, use the rx argument to provide a regular expression to match
the names to exclude.
The maxlevels argument controls the depth of recursion. For example, to avoid
recursion entirely pass 0.
----- Compilingsys.path -----
All of the Python source files found in sys.path can be compiled with a single call to
This example replaces the default contents of sys.path to avoid permission errors while running the script, but still illustrates the default behavior. Note that the maxlevels value defaults to 0.
----- From the Command Line -----
It is also possible to invoke compileall from the command line, as you might when integrating it with a build system via a Makefile. For example:
To recreate the example above, skipping .svn directories, one would run: