Swapping rows within the same pandas dataframe

Question

I\'m trying to swap the rows within the same DataFrame in pandas.

I\'ve tried running

a = pd.DataFrame(data = [[1,2],[3,4]], index=range(2), columns          


        

Answer 1

In this way, it can be extrapolated to more complex situations:

    a = pd.DataFrame(data = [[1,2],[3,4]], index=range(2), columns = ['A', 'B'])
    rows = a.index.tolist()
    rows = rows[-1:]+rows[:-1]
    a=a.loc[rows]