# Copyright (c) 2021 PaddlePaddle Authors. All Rights Reserved.## 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.# Modified from espnet(https://github.com/espnet/espnet)importimportlib__all__=["dynamic_import"]defdynamic_import(import_path,alias=dict()):"""dynamic import module and class :param str import_path: syntax 'module_name:class_name' e.g., 'paddlespeech.s2t.models.u2:U2Model' :param dict alias: shortcut for registered class :return: imported class """ifimport_pathnotinaliasand":"notinimport_path:raiseValueError("import_path should be one of {} or "'include ":", e.g. "paddlespeech.s2t.models.u2:U2Model" : '"{}".format(set(alias),import_path))if":"notinimport_path:import_path=alias[import_path]module_name,objname=import_path.split(":")m=importlib.import_module(module_name)returngetattr(m,objname)