Replace data from one pandas dataframe to another

Question

I have two dataframes df1 and df2 . They both contain time-series data, so it is possible some of the dates in df1 and df2 intersect with each other and the rest don\'t. My

Answer 1

I just saw this question and realized it is almost identical to one that I just asked today and that @Alexander (the poster of the answer above) answered very nicely:

pd.concat([df1[~df1.index.isin(df2.index)], df2])

See pandas DataFrame concat / update ("upsert")? for the discussion.