Присоединяйтесь к пандам колонны
# df1 as main df and use the feild from df2 and map it into df1
df1.merge(df2,on='columnName',how='left')
Magnificent Moth
# df1 as main df and use the feild from df2 and map it into df1
df1.merge(df2,on='columnName',how='left')df_merge_col = pd.merge(df_row, df3, on='id')
df_merge_col