pandas keep numerical part

Question

I have a set of data like:

        0       1 
0  type 1  type 2
1  type 3  type 4

How can I transfer it to:

   0  1
0  1  2
1  3  4

perfer using applyor transform function

Answer 1

Yoou can use DataFrame.replace:

print (df.replace({'type ': ''}, regex=True))
   0  1
0  1  2
1  3  4

Answer 2

>>> df.apply(lambda x: x.str.replace('type ','').astype(int))
   0  1
0  1  2
1  3  4

remove the .astype(int) if you don't need to convert to int