support.py 文件源码

def forget(modname):
    """'Forget' a module was ever imported.

    This removes the module from sys.modules and deletes any PEP 3147 or
    legacy .pyc and .pyo files.
    """
    unload(modname)
    for dirname in sys.path:
        source = os.path.join(dirname, modname + '.py')
        # It doesn't matter if they exist or not, unlink all possible
        # combinations of PEP 3147 and legacy pyc and pyo files.
        unlink(source + 'c')
        unlink(source + 'o')
        unlink(imp.cache_from_source(source, debug_override=True))
        unlink(imp.cache_from_source(source, debug_override=False))

# On some platforms, should not run gui test even if it is allowed
# in `use_resources'.