[Python] Why time.time() gives 0.0?

 

You could use timeit.default_timer instead of time.time. 

timeit.default_timer will choose the best timer (time.time, time.clock or time.perf_counter) for your system.

 

The resolution of the timer isn't unlimited; it goes up by small amounts periodically. If the two calls are close enough together, you will see a zero value. If you tried a large number of such calls, you would probably find that the difference is zero most of the time, and some number of microseconds the rest of the time, depending on your particular system's speed, hardware details, and kernel implementation.

 

 

 

참고자료 1 : 

https://stackoverflow.com/questions/48196000/why-is-time-time-time-time-0-0

Why is time.time() - time.time() = 0.0?

 

참고자료 2 :

https://stackoverflow.com/questions/33086519/why-time-time-gives-0-0

Why time.time() gives 0.0?

 

참고자료 3 : https://docs.python.org/ko/3/library/timeit.html

timeit — 작은 코드 조각의 실행 시간 측정 — Python 3.8.3 문서

 

참고자료 4 : https://pymotw.com/2/timeit/

timeit – Time the execution of small bits of Python code. - Python Module of the Week