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https://github.com/emilybache/GildedRose-Refactoring-Kata.git
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41 lines
1.3 KiB
Python
41 lines
1.3 KiB
Python
# Copyright 2012 Yelp
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# Copyright 2017 Yelp
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# Copyright 2019 Yelp
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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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"""Return all input lines matching the given expression."""
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from mrjob.job import MRJob
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from mrjob.util import cmd_line
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class MRGrepJob(MRJob):
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def configure_args(self):
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super(MRGrepJob, self).configure_args()
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self.add_passthru_arg(
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'-e', '--expression',
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required=True,
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help=('Expression to search for. Required.'))
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def mapper_cmd(self):
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# grep will return exit status 1 if no matching lines are found
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return cmd_line([
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'sh', '-c',
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'grep -e %s || RC=$?; if [ $RC -ne 1 ]; then (exit $RC); fi' % (
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cmd_line([self.options.expression]))])
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if __name__ == '__main__':
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MRGrepJob.run()
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