import pandas as pd # use Address 1 junte_df = pd.read_excel("hackney_uprn_failures.xlsx") # use domna_address_1 khalim_df = pd.read_excel("khalim_standard.xlsx") combined_df = junte_df.merge(khalim_df, how="left", left_on="Address 1", right_on='domna_address_1') # Find the row in khalim_df that does not app result = combined_df[~pd.isnull(combined_df["epc_os_uprn"])]