sleepwait.py

import time

for i in range(1, 1000):
	i = i / 1000.0
	then = time.time()
	time.sleep(max(0, i - 0.005))
	now = time.time()
	while now - then - i < 0:
		now = time.time()
	print(round(now - then - i, 5))