def fixup_namespace_packages(path_item, parent=None):
    _imp.acquire_lock()
    try:
        for package in _namespace_packages.get(parent,()):
            subpath = _handle_ns(package, path_item)
            if subpath:
                fixup_namespace_packages(subpath, package)
    finally:
        _imp.release_lock()
Ensure that previously-declared namespace packages include path_item
dataset/ETHPy150Open anzev/hedwig/build/pip/pip/_vendor/pkg_resources/__init__.py/fixup_namespace_packages