python pad number with leading zeros code example

Example 1: python convert number to string with leading zeros

str(1).zfill(2)
# 1 will be '01'

str(23).zfill(4)
# 23 will be '0023'

Example 2: python3 format leading 0

print(f"{1:02d}")

Example 3: how to append leading zeros in python

str.zfill(width)

Example 4: python3 format leading 0

print("{:02d}".format(1))