Byte-compile a collection of Python source files to either .pyc or .pyo files in the same directory. 'py_files' is a list of files to compile; any files that don't end in ".py" are silently skipped. 'optimize' must be one of the following: 0 - don't optimize (generate .pyc)
(py_files,
optimize=0, force=0,
prefix=None, base_dir=None,
verbose=1, dry_run=0,
direct=None)
source not stored for this graph (policy: none)