how to merge dataframe with different keys
pandas.merge(df1, df2, how='left', left_on=['id_key'], right_on=['fk_key'])how to merge dataframe with different keys
pandas.merge(df1, df2, how='left', left_on=['id_key'], right_on=['fk_key'])pandas merge python
import pandas as pd
df1 = pd.DataFrame({'lkey': ['foo', 'bar', 'baz', 'foo'],
'value': [1, 2, 3, 5]})
df2 = pd.DataFrame({'rkey': ['foo', 'bar', 'baz', 'foo'],
'value': [5, 6, 7, 8]})
df1.merge(df2, left_on='lkey', right_on='rkey')merge dataframe pandas
>>> df1.merge(df2, left_on='lkey', right_on='rkey')
lkey value_x rkey value_y
0 foo 1 foo 5
1 foo 1 foo 8
2 foo 5 foo 5
3 foo 5 foo 8
4 bar 2 bar 6
5 baz 3 baz 7Copyright © 2021 Codeinu
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