Sorting letters within each cell in pandas

Question

I have this data frame:

AB  DC
BA  WZ
DC  ZW

And I want to sort letters of each cell using pandas, like this:

AB CD
AB WZ
CD WZ

Thanks!

Answer 1

Try

df = df.applymap(lambda x : ''.join(sorted(list(x))))
  col1 col2
0   AB   CD
1   AB   WZ
2   CD   WZ

Answer 2

Use:

df.applymap(lambda x:  ''.join(sorted(x)))