Python converte o número em string com os zeros principais
str(1).zfill(2)
# 1 will be '01'
str(23).zfill(4)
# 23 will be '0023'
Marton
str(1).zfill(2)
# 1 will be '01'
str(23).zfill(4)
# 23 will be '0023'
print(f"{1:02d}")
print("{:02d}".format(1))