48 lines
1.7 KiB
Python
48 lines
1.7 KiB
Python
# Copyright (C) 2014-2015 Andrey Antukh <niwi@niwi.be>
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# Copyright (C) 2014-2015 Jesús Espino <jespinog@gmail.com>
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# Copyright (C) 2014-2015 David Barragán <bameda@dbarragan.com>
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as
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# published by the Free Software Foundation, either version 3 of the
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# License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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def make_diff(first:dict, second:dict, not_found_value=None, excluded_keys:tuple=()) -> dict:
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"""
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Compute a diff between two dicts.
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"""
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diff = {}
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# Check all keys in first dict
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for key in first:
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if key not in second:
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diff[key] = (first[key], not_found_value)
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elif first[key] != second[key]:
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diff[key] = (first[key], second[key])
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# Check all keys in second dict to find missing
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for key in second:
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if key not in first:
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diff[key] = (not_found_value, second[key])
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# Remove A -> A changes that usually happens with None -> None
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for key, value in list(diff.items()):
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frst, scnd = value
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if frst == scnd:
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del diff[key]
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# Removed excluded keys
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for key in excluded_keys:
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if key in diff:
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del diff[key]
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return diff
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