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util.py
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34 lines (30 loc) · 1.08 KB
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# pylint: disable=missing-docstring
# pylint: enable=missing-docstring
# Copyright 2017 Spotify AB
#
# 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.
class lazy_import: # pylint: disable=invalid-name, too-few-public-methods
"""
Lazily import the given module.
Parameters
----------
module : str
name of the module to import
"""
def __init__(self, module):
self.module = module
self._module = None
def __getattr__(self, name):
if self._module is None:
self._module = __import__(self.module)
return getattr(self._module, name)