Pandas merge two DF with rows replacement

Question

I faced with an issue to merge two DF into one and save all duplicate rows by id value from the second DF. Example:

df1 = pd.DataFrame({
    \'id\':          


        

Answer 1

If need unique id with remove values from df1 if exist also in df2 use:

df = pd.concat([df1, df2]).drop_duplicates('id', keep='last')