how to print live time when program started pytohn code example

Example 1: python how to measure code run in time

import time
start_time = time.time()
main()
print("--- %s seconds ---" % (time.time() - start_time))

Example 2: how to print time python

import datetime
datetime.datetime.now()
datetime.datetime(2009, 1, 6, 15, 8, 24, 78915)

print(datetime.datetime.now())
#2009-01-06 15:08:24.789150