all Python 3timeitfunction

timeit.default_timer()

timing

The clock timeit uses by default; since Python 3.3 it is time.perf_counter.

Syntax

start = timeit.default_timer(); ...; elapsed = timeit.default_timer() - start

It is not a separate function but a reference to time.perf_counter, so a single value is meaningless; only the difference of two calls matters. It includes sleep and time spent by other processes; for pure CPU time pass time.process_time as timer=.

Examples

import time, timeit
print(timeit.default_timer is time.perf_counter)  # → True
start = timeit.default_timer()
total = sum(range(10_000))
elapsed = timeit.default_timer() - start
print(elapsed >= 0)  # → True
print(elapsed)  # → ? секунды

See also

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