I have a dataframe of 3*1 dimensions. The dataframe looks like the following:

    weights
0   4
1   13
2   91

I want to make the dataframe upside down like the following:

    weights
0   91
1   13
2   4

How can I do that?

CodePudding user response：

You can convert the column to a numpy array and use an slice with a step of -1 to reverse:

df['weights'] = df['weights'].to_numpy()[::-1]

Output:

>>> df
   weights
0       91
1       13
2        4