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40 lines
1.2 KiB
40 lines
1.2 KiB
# Copyright 2018 The TensorFlow Authors. All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# ==============================================================================
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"""Python context management helper."""
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from __future__ import absolute_import
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from __future__ import division
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from __future__ import print_function
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class IdentityContextManager(object):
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"""Returns an identity context manager that does nothing.
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This is helpful in setting up conditional `with` statement as below:
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with slim.arg_scope(x) if use_slim_scope else IdentityContextManager():
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do_stuff()
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"""
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def __enter__(self):
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return None
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def __exit__(self, exec_type, exec_value, traceback):
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del exec_type
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del exec_value
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del traceback
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return False
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