find difference between two pandas dataframes
# by doing outer, you will get records from both the sides.
f = df1.merge(df2,indicator = True, how='outer').loc[lambda x : x['_merge']!='both']
Out[421]:
A B _merge
1 2 3 left_only
2 3 4 left_only
3 3 4 left_only
left_unique_result = f.loc[lambda x: x['_merge'] == 'left_only']
right_unique_result = f.loc[lambda x: x['_merge'] == 'right_only']pandas get row if difference previous
>>> df = pd.DataFrame({'a': [1, 2, 3],
... 'b': [1, 1, 2],
... 'c': [1, 4, 9]})
>>> df
a b c
0 1 1 1
1 2 1 4
2 3 2 9
>>> df.diff()
a b c
0 NaN NaN NaN
1 1.0 0.0 3.0
2 1.0 1.0 5.0Copyright © 2021 Codeinu
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