Routine to "compile" a .py file to a .pyc (or .pyo) file.
This module has intimate knowledge of the format of .pyc files.
- compile(file, cfile=None, dfile=None)
- Byte-compile one Python source file to Python bytecode.
/get.cgi/ source filename
c/get.cgi/ target filename; defaults to source with 'c' or 'o' appended
('c' normally, 'o' in optimizing mode, giving .pyc or .pyo)
d/get.cgi/ purported filename; defaults to source (this is the filename
that will show up in error messages)
Note that it isn't necessary to byte-compile Python modules for
execution efficiency -- Python itself byte-compiles a module when
it is loaded, and if it can, writes out the bytecode to the
corresponding .pyc (or .pyo) file.
However, if a Python installation is shared between users, it is a
good idea to byte-compile all modules upon installation, since
other users may not be able to write in the source directories,
and thus they won't be able to write the .pyc/.pyo file, and then
they would be byte-compiling every module each time it is loaded.
This can slow down program start-up considerably.
See compileall.py for a script/module that uses this module to
byte-compile all installed files (or all files in selected
- wr_long(f, x)
- Internal; write a 32-bit int to a file in little-endian order.
||MAGIC = '\374\304\015\012'|
__file__ = '/usr/lib/python1.6/py_compile.pyc'
__name__ = 'py_compile'