if you are importing another python file do you have to import again requesites code example

Example 1: python import

from time import sleep
# or import time

a = 10
sleep(4) # sleep function from time library
print(a)

Example 2: python import

import datetime #import module
from datetime import timedelta #import method from module

#You can also use alias names for both
import datetime as dt
from datetime import timedelta as td