35 lines
1.2 KiB
Python
35 lines
1.2 KiB
Python
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# Copyright 2013 OpenStack Foundation
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# 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, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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#
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"""argparse Custom Actions"""
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import argparse
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class KeyValueAction(argparse.Action):
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"""A custom action to parse arguments as key=value pairs.
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Ensures that dest is a dict
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"""
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def __call__(self, parser, namespace, values, option_string=None):
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# Make sure we have an empty dict rather than None
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if getattr(namespace, self.dest, None) is None:
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setattr(namespace, self.dest, {})
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# Add value if an assignment else remove it
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if '=' in values:
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getattr(namespace, self.dest, {}).update([values.split('=', 1)])
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else:
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getattr(namespace, self.dest, {}).pop(values, None)
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