python one liner to add "0" if len of string is 2 and do nothing if len is 3

Question

I have a string with len of 2 or 3

s1 = 22
s2 = 27
s3 = 102

I want to return a string with 3 chars. If orig string was len of 2 - add 0 at the begginig. So output will be:

"022" , "027", "102".

Is there an elegant/one liner to do it in Python?

score 2 · Accepted Answer · answered Jun 23 '21 at 13:52

2

there's a str method just for this!

s.zfill(3)

answered Jun 23 '21 at 13:52

acushner

score 0 · Answer 2 · answered Jun 23 '21 at 13:53

0

Use fstring with number of digits followed by digit value.

s = 22
f'{s:03}'

>> '022'

answered Jun 23 '21 at 13:53

Hamza usman ghani

2 Answers2