­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ import pathlib import sys def setup(pth_file_path): # Discover the extras-. directory extras_parent_path = pathlib.Path(pth_file_path).resolve().parent.parent if not sys.platform.startswith("win"): extras_parent_path = extras_parent_path.parent extras_path = str(extras_parent_path / "extras-{}.{}".format(*sys.version_info)) if extras_path in sys.path and sys.path[0] != extras_path: # The extras directory must come first sys.path.remove(extras_path) if extras_path not in sys.path: sys.path.insert(0, extras_path)