merge on two columns code example
Example 1: 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 2: merge two columns pandas
df["period"] = df["Year"] + df["quarter"]new_df = pd.merge(A_df, B_df, how='left', left_on=['A_c1','c2'], right_on = ['B_c1','c2'])df["period"] = df["Year"] + df["quarter"]