do a left join in pandas code example
Example 1: pandas left join
df.merge(df2, left_on = "doc_id", right_on = "doc_num", how = "left")Example 2: python dataframe left join
>>> left.merge(right, on='user_id', how='left')df.merge(df2, left_on = "doc_id", right_on = "doc_num", how = "left")>>> left.merge(right, on='user_id', how='left')