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.
+ If ``'-'`` is the only parameter in args, the list of files is taken from
+ standard input.
+
+ .. versionchanged:: 2.7
+ Added support for ``'-'``.
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