deepdiff

Deep Difference of dictionaries, iterables, strings and other objects. It will recursively look for all the changes. Tested on Python 2.7 and 3.4

Note:

This fork provides for changes specifically around handling rounding in float related fields

Installation

Install from PyPi:

pip install deepdiff

Importing

>>> from deepdiff import DeepDiff

Supported data types

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

Examples

Same object returns empty

>>> t1 = {1:1, 2:2, 3:3}
>>> t2 = t1
>>> ddiff = DeepDiff(t1, t2)
>>> ddiff
{}

Type of an item has changed

>>> t1 = {1:1, 2:2, 3:3}
>>> t2 = {1:1, 2:"2", 3:3}
>>> ddiff = DeepDiff(t1, t2)
>>> print (ddiff)
{'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}
>>> ddiff = DeepDiff(t1, t2)
>>> print (ddiff)
{'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)
>>> from pprint import pprint
>>> 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

>>> 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, 3]}}
>>> ddiff = DeepDiff(t1, t2)
>>> pprint (ddiff, indent = 2)
{ 'iterable_item_added': ["root[4]['b']: [3]"],
  'values_changed': ["root[4]['b'][1]: 2 ===> 3", "root[4]['b'][2]: 3 ===> 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"]}

Sets

>>> t1 = {1, 2, 8}
>>> t2 = {1, 2, 3, 5}
>>> ddiff = DeepDiff(t1, t2)
>>> print (DeepDiff(t1, t2))
{'set_item_added': ['root: [3, 5]'], 'set_item_removed': ['root: [8]']}

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']}

Object attribute added:

>>> t2.c = "new attribute"
>>> print(DeepDiff(t1, t2))
{'attribute_added': ['root.c'], 'values_changed': ['root.b: 1 ===> 2']}

Ignoring order:

Note: If your objects include iterable containing any unhashable item, ignoring the order can be expensive.

>>> t1 = [{"a": 2}, {"b": [3, 4, {1: 1}]}]
>>> t2 = [{"b": [3, 4, {1: 1}]}, {"a": 2}]
ddiff = DeepDiff(t1, t2, ignore_order=True)
>>>
>>> print(DeepDiff(t1, t2))
{}

Documentation

http://deepdiff.readthedocs.org/en/latest/

Build Process:

1. Update the __version_info__ inside of the application. Commit and push.
2. Tag the release with the version. git tag <version> -m "Release"; git push --tags
3. Build the release rm -rf dist build *egg-info; python setup.py sdist bdist_wheel
4. Upload the data twine upload dist/*

Changelog

• See https://github.com/pivotal-energy-solutions/deepdiff/release

Original Author

Seperman Github: https://github.com/seperman Linkedin: http://www.linkedin.com/in/sepehr ZepWorks: http://www.zepworks.com

Thanks to: brbsix for initial Py3 porting WangFenjin for unicode support