How to pad a string with leading zeros in Python 3 [duplicate]
Make use of the zfill() helper method to left-pad any string, integer or float with zeros; it's valid for both Python 2.x and Python 3.x.
It important to note that Python 2 is no longer supported.
Sample usage:
print(str(1).zfill(3))# Expected output: 001Description:
When applied to a value, zfill() returns a value left-padded with zeros when the length of the initial string value less than that of the applied width value, otherwise, the initial string value as is.
Syntax:
str(string).zfill(width)# Where string represents a string, an integer or a float, and# width, the desired length to left-pad.
Since python 3.6 you can use fstring :
>>> length = 1>>> print(f'length = {length:03}')length = 001
There are many ways to achieve this but the easiest way in Python 3.6+, in my opinion, is this:
print(f"{1:03}")