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path: root/lib/python2.7/site-packages/buildbot-0.8.8-py2.7.egg/buildbot/util/bbcollections.py
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# This file is part of Buildbot.  Buildbot is free software: you can
# redistribute it and/or modify it under the terms of the GNU General Public
# License as published by the Free Software Foundation, version 2.
#
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
# details.
#
# You should have received a copy of the GNU General Public License along with
# this program; if not, write to the Free Software Foundation, Inc., 51
# Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
# Copyright Buildbot Team Members

# this is here for compatibility
from collections import defaultdict
assert defaultdict

class KeyedSets:
    def __init__(self):
        self.d = dict()
    def add(self, key, value):
        if key not in self.d:
            self.d[key] = set()
        self.d[key].add(value)
    def discard(self, key, value):
        if key in self.d:
            self.d[key].discard(value)
            if not self.d[key]:
                del self.d[key]
    def __contains__(self, key):
        return key in self.d
    def __getitem__(self, key):
        return self.d.get(key, set())
    def pop(self, key):
        if key in self.d:
            return self.d.pop(key)
        return set()