Answers for "combine three array in dataframe"

12

combining 2 dataframes pandas

df_3 = pd.concat([df_1, df_2])
Posted by: Guest on May-13-2020
-1

Merge multiple dataframs

df_merged = reduce(lambda  left,right: pd.merge(left,right,on=['DATE'],
                                            how='outer'), data_frames)

# if you want to fill the values that don't exist in the lines of merged dataframe simply fill with required strings as

df_merged = reduce(lambda  left,right: pd.merge(left,right,on=['DATE'],
                                            how='outer'), data_frames).fillna('void')
Posted by: Guest on September-02-2021

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