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timeit test function performance python

Grotesque Gibbon answered on August 13, 2022 Popularity 9/10 Helpfulness 4/10

answer timeit test function performance python

timeit test function performance python

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# Testing function performance with timeit module
# timeit.timeit(stmt='pass', setup='pass', timer=<default timer>, number=1000000, globals=None)¶
# Create a Timer instance with the given statement, setup code 
# and timer function and run its timeit() method with number executions. 
# The optional globals argument specifies a namespace in which to execute the code.

import timeit
def func(num_times):
    for i in range(num_times):
        sum([i**2 for i in range(1000)])
        
run_time = timeit.timeit("func(1000)", setup="from __main__ import func", number = 10)
print(f'{run_time:.2f}')
# 1.84

run_time1 = timeit.timeit("func(1000)", number = 10, globals=globals())
print(f'{run_time:.2f}')
# 1.84

# Decorator: print the runtime of the decorated function
# https://stackoverflow.com/questions/70601205/how-do-i-use-timeit-module-inside-a-decorator
from functools import wraps
import timeit
# timeit: precise measurements of code, It temporarily disables garbage collection '
# and runs multiple trials to strip out noise from quick function calls.

def timer(func):
    """Print the runtime of the decorated function"""
    @wraps(func)
    def wrapper_timer(*args, **kwargs):
        print(func.__doc__, args)
        res = func(*args)
        print(res)
        run_time = timeit.timeit(stmt=lambda: func(*args, **kwargs), number = 100)
        print(f"Finished {func.__name__!r} in {run_time:.4f} secs")
    return wrapper_timer

@timer
def waste_some_time(num_times):
    '''This is a testing function '''
    for _ in range(num_times):
        sum([i**2 for i in range(1000)])
    return None

waste_some_time(100)
# This is a testing function  (100,)
# None
# Finished 'waste_some_time' in 1.8995 secs

Popularity 9/10 Helpfulness 4/10 Language python

Source: docs.python.org

Tags: decorator function measure module performance python runtime time timeit

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Contributed on Aug 13 2022

Grotesque Gibbon

0 Answers Avg Quality 2/10

timeit test function performance python

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