how to make a timer in python

1import time					
2tic = time.perf_counter() # Start Time
3your_program() 			  # Your code here
4toc = time.perf_counter() # End Time
5# Print the Difference Minutes and Seconds
6print(f"Build finished in {(toc - tic)/60:0.0f} minutes {(toc - tic)%60:0.0f} seconds")
7# For additional Precision
8print(f"Build finished in {toc - tic:0.4f} seconds")

1import time, os
2
3seconds_to_go_for = 10 # How long the timer will go for
4current_time = int(time.time()) # Gets the time before the timer starts
5
6def clear():
7  if os.name == "nt":
8    os.system("cls") # Clear function, to avoid spam. Source: geeksforgeeks.org
9  else:
10    os.system("clear")
11
12while True:
13  time_now = int(time.time()) # Gets time during the timer's running
14  if time_now >= current_time + seconds_to_go_for: # Checks if enough time has passed
15    break # Stops loop if so
16  
17  print(f"Seconds passed: {time_now - current_time}") # Prints how much time has passed
18  clear()
19print("The timer has ended") 

1def hello():
2    print "hello, world"
3
4t = Timer(30.0, hello)
5t.start() # after 30 seconds, "hello, world" will be printed
6

1import time
2import sys
3
4time_start = time.time()
5seconds = 0
6minutes = 0
7
8while True:
9    try:
10        sys.stdout.write("\r{minutes} Minutes {seconds} Seconds".format(minutes=minutes, seconds=seconds))
11        sys.stdout.flush()
12        time.sleep(1)
13        seconds = int(time.time() - time_start) - minutes * 60
14        if seconds >= 60:
15            minutes += 1
16            seconds = 0
17    except KeyboardInterrupt, e:
18        break

1import time
2start = time.time()
3# do something
4duration = time.time() - start

1import time
2timer_length = float(input("How many seconds would you like you're timer to be set for? "))
3time.sleep(timer_length)
4print("Done!")