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Differ

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Python library to calculate differences between objects.

Right now, it supports calculating differences between objects built up of dicts, lists, tuples and base types.

The major advantage compared to other diff tools is it is able to detect “slightly” changed objects that were repositioned in a list:

from differ import compare_objects

seq1 = [
    {'a': 1, 'b': 1, 'c': 1},
    {'a': 2, 'b': 2, 'c': 2},
    {'a': 3, 'b': 3, 'c': 3},
]

seq2 = [
    {'a': 30, 'b': 30, 'c': 3},
    {'a': 2, 'b': 20, 'c': 2},
    {'a': 1, 'b': 1, 'c': 10},
]

diff = compare_objects(seq1, seq2)

Result:

{'added': [],
 'changed': [0, 1, 2],
 'distance': 1.0,
 'equal': [],
 'removed': [],
 'total': 3,
 'changes': {
    0: {
        'diff': {
            'added': [],
            'changed': ['c'],
            'changes': {'c': {'distance': 1.0, 'left': 1, 'right': 10}},
            'distance': 0.3333333333333333,
            'equal': ['a', 'b'],
            'removed': [],
            'total': 3},
        'distance': 0.3333333333333333,
        'pos': 2},
    1: {
        'diff': {
            'added': [],
            'changed': ['b'],
            'changes': {'b': {'distance': 1.0, 'left': 2, 'right': 20}},
            'distance': 0.3333333333333333,
            'equal': ['a', 'c'],
            'removed': [],
            'total': 3},
        'distance': 0.3333333333333333,
        'pos': 1},
    2: {
        'diff': {
            'added': [],
            'changed': ['a', 'b'],
            'changes': {'a': {'distance': 1.0, 'left': 3, 'right': 30},
                        'b': {'distance': 1.0, 'left': 3, 'right': 30}},
            'distance': 0.6666666666666666,
            'equal': ['c'],
            'removed': [],
            'total': 3},
        'distance': 0.6666666666666666,
        'pos': 0}}}

Changelog

v0.1.4

  • Added CHANGELOG.rst to distributed files (that was the problem!)

v0.1.3

  • Fixed issues with *.rst loading for long_description.

v0.1.1

  • Initial version, with support for base objects.

Metadata

Release files for differ 0.1.4

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