import time
if __name__ == '__main__':
time_start = time.time()
time.sleep(2)
time_end = time.time()
print('totally cost', round(time_end - time_start, 2), 's')
import time
if __name__ == '__main__':
time_start = time.time()
time.sleep(2)
time_end = time.time()
print('totally cost', round(time_end - time_start, 2), 's')
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