pandas dataframe join two dataframes code example

Example 1: pandas left join

df.merge(df2, left_on = "doc_id", right_on = "doc_num", how = "left")

Example 2: combining 2 dataframes pandas

df_3 = pd.concat([df_1, df_2])

Example 3: join tables pandas

In [88]: result = left.join(right, how='inner')

Example 4: how to join two dataframe in pandas based on two column

merged_df = left_df.merge(right_df, how='inner', left_on=["A", "B"], right_on=["A2","B2"])