1 :mod:`py_compile` --- Compile Python source files
2 =================================================
5 :synopsis: Generate byte-code files from Python source files.
6 .. sectionauthor:: Fred L. Drake, Jr. <fdrake@acm.org>
7 .. documentation based on module docstrings
9 .. index:: pair: file; byte-code
11 The :mod:`py_compile` module provides a function to generate a byte-code file
12 from a source file, and another function used when the module source file is
15 Though not often needed, this function can be useful when installing modules for
16 shared use, especially if some of the users may not have permission to write the
17 byte-code cache files in the directory containing the source code.
20 .. exception:: PyCompileError
22 Exception raised when an error occurs while attempting to compile the file.
25 .. function:: compile(file[, cfile[, dfile[, doraise]]])
27 Compile a source file to byte-code and write out the byte-code cache file. The
28 source code is loaded from the file name *file*. The byte-code is written to
29 *cfile*, which defaults to *file* ``+`` ``'c'`` (``'o'`` if optimization is
30 enabled in the current interpreter). If *dfile* is specified, it is used as the
31 name of the source file in error messages instead of *file*. If *doraise* is
32 true, a :exc:`PyCompileError` is raised when an error is encountered while
33 compiling *file*. If *doraise* is false (the default), an error string is
34 written to ``sys.stderr``, but no exception is raised.
37 .. function:: main([args])
39 Compile several source files. The files named in *args* (or on the command
40 line, if *args* is not specified) are compiled and the resulting bytecode is
41 cached in the normal manner. This function does not search a directory
42 structure to locate source files; it only compiles files named explicitly.
44 When this module is run as a script, the :func:`main` is used to compile all the
45 files named on the command line. The exit status is nonzero if one of the files
46 could not be compiled.
48 .. versionchanged:: 2.6
49 Added the nonzero exit status when module is run as a script.
54 Module :mod:`compileall`
55 Utilities to compile all Python source files in a directory tree.