Refactor lookup into module

skbase/lookup/__init__.py

@@ -0,0 +1,31 @@
+#!/usr/bin/env python3 -u
+# -*- coding: utf-8 -*-
+# copyright: skbase developers, BSD-3-Clause License (see LICENSE file)
+"""Tools to lookup information on code artifacts in a Python package or module.
+
+This module exports the following functions:
+
+package_metadata()
+    Walk package and return metadata on included classes and functions by module.
+    Users can optionally filter the information to return.
+all_objects()
+    Lookup BaseObject descendants in a package or module. Users can optionally filter
+    the information to return.
+"""
+# all_objects is based on the sktime all_estimator retrieval utility, which
+# is based on the sklearn estimator retrieval utility of the same name
+# See https://github.com/scikit-learn/scikit-learn/blob/main/COPYING and
+# https://github.com/sktime/sktime/blob/main/LICENSE
+from typing import List
+
+__all__: List[str] = ["all_objects", "get_package_metadata"]
+__author__: List[str] = [
+    "fkiraly",
+    "mloning",
+    "katiebuc",
+    "miraep8",
+    "xloem",
+    "rnkuhns",
+]
+
+from skbase.lookup._lookup import all_objects, get_package_metadata