How do I implement a stopwatch into my Python program to see exactly how long it takes to run?

Answer 1

import timeit
start_time = timeit.default_timer()
# statements from your program go here
stop_time = timeit.default_timer()
running_time = stop_time - start_time
print ("Program running time: ", running_time)

Answer 2

import time
seconds=0
while True:
time.sleep(1)
seconds+=1
print(seconds, end='\r')