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Deep Difference of dictionaries, iterables, strings and other objects. It will recursively look for all the changes.

Project description

DeepDiff v 0.5

Deep Difference of dictionaries, iterables, strings and almost any other object. It will recursively look for all the changes.

Parameters

t1 : A dictionary, list, string or any python object that has __dict__
This is the first item to be compared to the second item
t2 : dictionary, list, string or almost any python object that has __dict__
The second item is to be compared to the first one

Returns

A DeepDiff object that has already calculated the difference of the 2 items.

Supported data types

int, string, unicode, dictionary, list, tuple, set, frozenset, OrderedDict, NamedTuple and custom objects!

Examples

Importing
>>> from deepdiff import DeepDiff
>>> from pprint import pprint
>>> from __future__ import print_function # In case running on Python 2
Same object returns empty
>>> t1 = {1:1, 2:2, 3:3}
>>> t2 = t1
>>> print(DeepDiff(t1, t2))
{}
Type of an item has changed
>>> t1 = {1:1, 2:2, 3:3}
>>> t2 = {1:1, 2:"2", 3:3}
>>> print(DeepDiff(t1, t2))
{'type_changes': ["root[2]: 2=<type 'int'> ===> 2=<type 'str'>"]}
Value of an item has changed
>>> t1 = {1:1, 2:2, 3:3}
>>> t2 = {1:1, 2:4, 3:3}
>>> print(DeepDiff(t1, t2))
{'values_changed': ['root[2]: 2 ===> 4']}
Item added and/or removed
>>> t1 = {1:1, 2:2, 3:3, 4:4}
>>> t2 = {1:1, 2:4, 3:3, 5:5, 6:6}
>>> ddiff = DeepDiff(t1, t2)
>>> pprint (ddiff)
{'dic_item_added': ['root[5, 6]'],
 'dic_item_removed': ['root[4]'],
 'values_changed': ['root[2]: 2 ===> 4']}
String difference
>>> t1 = {1:1, 2:2, 3:3, 4:{"a":"hello", "b":"world"}}
>>> t2 = {1:1, 2:4, 3:3, 4:{"a":"hello", "b":"world!"}}
>>> ddiff = DeepDiff(t1, t2)
>>> pprint (ddiff, indent = 2)
{ 'values_changed': [ 'root[2]: 2 ===> 4',
                      "root[4]['b']: 'world' ===> 'world!'"]}
>>>
>>> print (ddiff['values_changed'][1])
root[4]['b']: 'world' ===> 'world!'
String difference 2
>>> t1 = {1:1, 2:2, 3:3, 4:{"a":"hello", "b":"world!\nGoodbye!\n1\n2\nEnd"}}
>>> t2 = {1:1, 2:2, 3:3, 4:{"a":"hello", "b":"world\n1\n2\nEnd"}}
>>> ddiff = DeepDiff(t1, t2)
>>> pprint (ddiff, indent = 2)
{ 'values_changed': [ "root[4]['b']:\n"
                      '--- \n'
                      '+++ \n'
                      '@@ -1,5 +1,4 @@\n'
                      '-world!\n'
                      '-Goodbye!\n'
                      '+world\n'
                      ' 1\n'
                      ' 2\n'
                      ' End']}
>>>
>>> print (ddiff['values_changed'][0])
root[4]['b']:
---
+++
@@ -1,5 +1,4 @@
-world!
-Goodbye!
+world
 1
 2
 End
Type change
>>> t1 = {1:1, 2:2, 3:3, 4:{"a":"hello", "b":[1, 2, 3]}}
>>> t2 = {1:1, 2:2, 3:3, 4:{"a":"hello", "b":"world\n\n\nEnd"}}
>>> ddiff = DeepDiff(t1, t2)
>>> pprint (ddiff, indent = 2)
{ 'type_changes': [ "root[4]['b']: [1, 2, 3]=<type 'list'> ===> world\n"
                    '\n'
                    '\n'
                    "End=<type 'str'>"]}
List difference
>>> t1 = {1:1, 2:2, 3:3, 4:{"a":"hello", "b":[1, 2, 3]}}
>>> t2 = {1:1, 2:2, 3:3, 4:{"a":"hello", "b":[1, 2]}}
>>> ddiff = DeepDiff(t1, t2)
>>> pprint (ddiff, indent = 2)
{'iterable_item_removed': ["root[4]['b']: [3]"]}
List difference 2: Note that it DOES NOT take order into account
>>> # Note that it DOES NOT take order into account
... t1 = {1:1, 2:2, 3:3, 4:{"a":"hello", "b":[1, 2, 3]}}
>>> t2 = {1:1, 2:2, 3:3, 4:{"a":"hello", "b":[1, 3, 2]}}
>>> ddiff = DeepDiff(t1, t2)
>>> pprint (ddiff, indent = 2)
{}
List that contains dictionary:
>>> t1 = {1:1, 2:2, 3:3, 4:{"a":"hello", "b":[1, 2, {1:1, 2:2}]}}
>>> t2 = {1:1, 2:2, 3:3, 4:{"a":"hello", "b":[1, 2, {1:3}]}}
>>> ddiff = DeepDiff(t1, t2)
>>> pprint (ddiff, indent = 2)
{ 'dic_item_removed': ["root[4]['b'][2][2]"],
  'values_changed': ["root[4]['b'][2][1]: 1 ===> 3"]}
Named Tuples:
>>> from collections import namedtuple
>>> Point = namedtuple('Point', ['x', 'y'])
>>> t1 = Point(x=11, y=22)
>>> t2 = Point(x=11, y=23)
>>> print (DeepDiff(t1, t2))
{'values_changed': ['root.y: 22 ===> 23']}
Custom objects:
>>> class ClassA(object):
...     a = 1
...     def __init__(self, b):
...         self.b = b
...
>>> t1 = ClassA(1)
>>> t2 = ClassA(2)
>>>
>>> print(DeepDiff(t1, t2))
{'values_changed': ['root.b: 1 ===> 2']}

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