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:mod:`compileall` --- Byte-compile Python libraries =================================================== .. module:: compileall :synopsis: Tools for byte-compiling all Python source files in a directory tree. 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. Command-line use ---------------- This module can work as a script (using :program:`python -m compileall`) to compile Python sources. .. program:: compileall .. cmdoption:: [directory|file]... 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 ``-l <directories from sys.path>``. .. cmdoption:: -l Do not recurse into subdirectories, only compile source code files directly contained in the named or implied directories. .. cmdoption:: -f Force rebuild even if timestamps are up-to-date. .. cmdoption:: -q Do not print the list of files compiled, print only error messages. .. cmdoption:: -d destdir 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. .. cmdoption:: -x regex 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. .. cmdoption:: -i list Read the file ``list`` and add each line that it contains to the list of files and directories to compile. If ``list`` is ``-``, read lines from ``stdin``. .. versionchanged:: 2.7 Added the ``-i`` option. Public functions ---------------- .. function:: compile_dir(dir[, maxlevels[, ddir[, force[, rx[, quiet]]]]]) Recursively descend the directory tree named by *dir*, compiling all :file:`.py` files along the way. The *maxlevels* parameter is used to limit the depth of the recursion; it defaults to ``10``. If *ddir* 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. If *force* is true, modules are re-compiled even if the timestamps are up to date. If *rx* 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. If *quiet* is true, nothing is printed to the standard output unless errors occur. .. function:: compile_file(fullname[, ddir[, force[, rx[, quiet]]]]) Compile the file with path *fullname*. If *ddir* 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. If *rx* 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 ``True`` is returned. If *quiet* is true, nothing is printed to the standard output unless errors occur. .. versionadded:: 2.7 .. function:: compile_path([skip_curdir[, maxlevels[, force]]]) Byte-compile all the :file:`.py` files found along ``sys.path``. If *skip_curdir* is true (the default), the current directory is not included in the search. All other parameters are passed to the :func:`compile_dir` function. Note that unlike the other compile functions, ``maxlevels`` defaults to ``0``. To force a recompile of all the :file:`.py` files in the :file:`Lib/` subdirectory and all its subdirectories:: import compileall compileall.compile_dir('Lib/', force=True) # Perform same compilation, excluding files in .svn directories. import re compileall.compile_dir('Lib/', rx=re.compile(r'[/\\][.]svn'), force=True) .. seealso:: Module :mod:`py_compile` Byte-compile a single source file.