merge two dataframes on multiple columns pandas code example
Example 1: merge two dataframes based on column
df_outer = pd.merge(df1, df2, on='id', how='outer')
df_outer
Example 2: pd merge on multiple columns
new_df = pd.merge(A_df, B_df, how='left', left_on=['A_c1','c2'], right_on = ['B_c1','c2'])
Example 3: python inner join based on two columns
df = pd.merge(left=df1, right=df2, on=['var_1', 'var_2'], how='inner']
Example 4: how to merge two pandas dataframes on a column
import pandas as pd
T1 = pd.merge(T1, T2, on=T1.index, how='outer')