symbian-qemu-0.9.1-12/python-2.6.1/Doc/library/py_compile.rst
author johnathan.white@2718R8BGH51.accenture.com
Mon, 08 Mar 2010 18:45:03 +0000
changeset 46 b6935a90ca64
parent 1 2fb8b9db1c86
permissions -rw-r--r--
Modify framebuffer and NGA framebuffer to read screen size from board model dtb file. Optimise memory usuage of frame buffer Add example minigui application with hooks to profiler (which writes results to S:\). Modified NGA framebuffer to run its own dfc queue at high priority

:mod:`py_compile` --- Compile Python source files
=================================================

.. module:: py_compile
   :synopsis: Generate byte-code files from Python source files.
.. sectionauthor:: Fred L. Drake, Jr. <fdrake@acm.org>
.. documentation based on module docstrings

.. index:: pair: file; byte-code

The :mod:`py_compile` module provides a function to generate a byte-code file
from a source file, and another function used when the module source file is
invoked as a script.

Though not often needed, this function can be useful when installing modules for
shared use, especially if some of the users may not have permission to write the
byte-code cache files in the directory containing the source code.


.. exception:: PyCompileError

   Exception raised when an error occurs while attempting to compile the file.


.. function:: compile(file[, cfile[, dfile[, doraise]]])

   Compile a source file to byte-code and write out the byte-code cache  file.  The
   source code is loaded from the file name *file*.  The  byte-code is written to
   *cfile*, which defaults to *file* ``+`` ``'c'`` (``'o'`` if optimization is
   enabled in the current interpreter).  If *dfile* is specified, it is used as the
   name of the source file in error messages instead of *file*.  If *doraise* is
   true, a :exc:`PyCompileError` is raised when an error is encountered while
   compiling *file*. If *doraise* is false (the default), an error string is
   written to ``sys.stderr``, but no exception is raised.


.. function:: main([args])

   Compile several source files.  The files named in *args* (or on the command
   line, if *args* is not specified) are compiled and the resulting bytecode is
   cached in the normal manner.  This function does not search a directory
   structure to locate source files; it only compiles files named explicitly.

When this module is run as a script, the :func:`main` is used to compile all the
files named on the command line.  The exit status is nonzero if one of the files
could not be compiled.

.. versionchanged:: 2.6
   Added the nonzero exit status when module is run as a script.


.. seealso::

   Module :mod:`compileall`
      Utilities to compile all Python source files in a directory tree.