The Python Quiz

time.perf_counter() returns a duration expressed in nanoseconds whilst time.time() returns a duration expressed in seconds. The reference point of the returned value of time.time() is 1 January 1970 whilst the reference point of the returned value of time.perf_counter() is 1 January 2000. The reference point of the returned value of time.time() is 1 January 1970 whilst the reference point of the returned value of time.perf_counter() is undefined.