How to add Trailing zeroes to an integer

Question

I have a positive integer variable which can have values between 0 to 999. This integer is then passed to a software.

To pass into this software the integer should a

Answer 1

You don't even need the formatting operators for this, just plain str methods. To right justify with zeroes:

x.zfill(3)

To left justify with zeroes:

x.ljust(3, '0')

You'd need to wrap x in str first in this scenario if x is currently an int. At that point, it may be worth just using the formatting operators as others have suggested to directly produce the final str, with no intermediate str, when justification is required.