如何用熊猫将数据框填充四次

Question

So if I have a dataframe like such:

  A  B  C
  1  1  1
  2  2  2
  3  3  3

I want to achieve this:

  A   B   C
  1   1   1
  1   1   1
  1   1   1
  1   1   1
  2   2   2
  2   2   2
  2   2   2
  2   2   2
  3   3   3
  3   3   3
  3   3   3
  3   3   3
  3   3   3

I know that this will probably involve ffill and the general process as describes in my question, but if there is a simpler way to do this, I'm perfectly happy with that. I just want the quickest and easiest way, because my script will be repeating this many times.

Thanks for all the help!

Answer 1

I think this is repeat not ffill

df.reindex(df.index.repeat(4))
Out[63]: 
   A  B  C
0  1  1  1
0  1  1  1
0  1  1  1
0  1  1  1
1  2  2  2
1  2  2  2
1  2  2  2
1  2  2  2
2  3  3  3
2  3  3  3
2  3  3  3
2  3  3  3