Answers for "dataframe merge add rows"

9

combining 2 dataframes pandas

df_3 = pd.concat([df_1, df_2])
Posted by: Guest on May-13-2020
0

pandas merge multiple dataframes

import pandas as pd
from functools import reduce

# compile the list of dataframes you want to merge
data_frames = [df1, df2, df3]
df_merged = reduce(lambda  left,right: pd.merge(left,right,on=['key_col'],
                                            how='outer'), data_frames)
Posted by: Guest on October-04-2020

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