core/maxframe/learn/contrib/utils.py

# Copyright 1999-2025 Alibaba Group Holding Ltd.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

import sys


def make_import_error_func(package_name):
    def _func(*_, **__):  # pragma: no cover
        raise ImportError(
            f"Cannot import {package_name}, please reinstall that package."
        )

    return _func


def config_mod_getattr(mod_dict, globals_):
    def __getattr__(name):
        import importlib

        if name in mod_dict:
            mod_name, cls_name = mod_dict[name].rsplit(".", 1)
            mod = importlib.import_module(mod_name, globals_["__name__"])
            cls = globals_[name] = getattr(mod, cls_name)
            return cls
        else:  # pragma: no cover
            raise AttributeError(name)

    if sys.version_info[:2] < (3, 7):
        for _mod in mod_dict.keys():
            __getattr__(_mod)

    def __dir__():
        return sorted([n for n in globals_ if not n.startswith("_")] + list(mod_dict))

    globals_.update(
        {
            "__getattr__": __getattr__,
            "__dir__": __dir__,
            "__all__": list(__dir__()),
            "__warningregistry__": dict(),
        }
    )