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# Copyright (c) 2016 EasyStack Inc.
# All Rights Reserved.
#
# 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.
def flatten_dict_to_keypairs(d, separator=':'):
"""Generator that produces sequence of keypairs for nested dictionaries.
:param d: dictionaries which may be nested
:param separator: symbol between names
"""
for name, value in sorted(d.items()):
if isinstance(value, dict):
for subname, subvalue in flatten_dict_to_keypairs(value,
separator):
yield '%s%s%s' % (name, separator, subname), subvalue
else:
yield name, value
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