python中怎么测量一段代码的执行时间？

time.time()

time

time.time()

timeit

import time

start_time = time.time()
# 这里放置你要测量的代码
result = sum(range(100000))
end_time = time.time()

execution_time = end_time - start_time
print(f"代码执行时间: {execution_time} 秒")


import timeit

code_to_test = """
result = sum(range(100000))
"""

execution_time = timeit.timeit(code_to_test, number=100) # 执行100次取平均值
print(f"代码执行时间 (timeit): {execution_time / 100} 秒")

timeit

time.time()

timeit

timeit

time

timeit

perf_counter()

process_time()

import time

start_time = time.perf_counter()
# 这里放置你要测量的代码
result = sum(range(100000))
end_time = time.perf_counter()

execution_time = end_time - start_time
print(f"代码执行时间 (perf_counter): {execution_time} 秒")


import time

start_time = time.process_time()
# 这里放置你要测量的代码
result = sum(range(100000))
end_time = time.process_time()

execution_time = end_time - start_time
print(f"代码执行时间 (process_time): {execution_time} 秒")

perf_counter

process_time

process_time

cProfile

import cProfile

def my_function():
    result = sum(range(100000))
    return result

cProfile.run('my_function()')

cProfile

cProfile

tottime

cumtime

cumtime