Hello I want to add a leading zero in my current column with str and int but I do not know how. I only want to add leading zeros to the numbers ex: not A111. The data is imported from a csv file. I am very new to pandas and python.
ex:
Section
1
2
3
4
4SS
15
S1
A111
Convert into:
Section
01
02
03
04
4SS
15
S1
A111
See Question&Answers more detail:os