'%05d'%int python code example
Example: python convert number to string with leading zeros
str(1).zfill(2)
# 1 will be '01'
str(23).zfill(4)
# 23 will be '0023'
str(1).zfill(2)
# 1 will be '01'
str(23).zfill(4)
# 23 will be '0023'