I have following DataFrames:
stores = [['AA', 12, 'Red'], ['BB', 13, 'Red'], ['BB', 14, 'Red'], ['BB', 15, 'Red']]
visits = [['BB', 13, 'Green'], ['BB', 14, 'Blue']]
stores_df = pd.DataFrame(data=stores, columns=['retailer', 'store', 'color'])
stores_df.set_index(['retailer', 'store'], inplace=True)
visits_df = pd.DataFrame(data=visits, columns=['retailer', 'store', 'color'])
visits_df.set_index(['retailer', 'store'], inplace=True)
color
retailer store
BB 13 Green
14 Blue
color
retailer store
AA 12 Red
BB 13 Red
14 Red
15 Red
How I can merge them in order to get following result:
color
retailer store
AA 12 Red
BB 13 Green
14 Blue
15 Red
You can use update
:
In [41]: stores_df.update(visits_df)
In [42]: stores_df
Out[42]:
color
retailer store
AA 12 Red
BB 13 Green
14 Blue
15 Red
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