pkgutil.py 文件源码

def _get_spec(finder, name):
    """Return the finder-specific module spec."""
    # Works with legacy finders.
    try:
        find_spec = finder.find_spec
    except AttributeError:
        loader = finder.find_module(name)
        if loader is None:
            return None
        return importlib.util.spec_from_loader(name, loader)
    else:
        return find_spec(name)