python计算函数执行时长的方法是什么

importtime

deffunc():
time.sleep(1)

t=time.time()
func()
print(f'耗时:{time.time()-t:.4f}s')

耗时:1.0050s

importtime
deffunc():
print('helloworld')
t=time.perf_counter()
func()
print(f'耗时:{time.perf_counter()-t:.8f}s')
helloworld
耗时:0.00051790s

timeit()函数有5个参数:
stmt参数是需要执行的语句，默认为pass
setup参数是用来执行初始化代码或构建环境的语句，默认为pass
timer是计时器，默认是perf_counter()
number是执行次数，默认为一百万
globals用来指定要运行代码的命名空间，默认为None
importtimeit
deffunc():
print('helloworld')
print(f'耗时:{timeit.timeit(stmt=func,number=1)}')
helloworld
耗时:0.0007705999999999824

importtime
defcoast_time(func):
deffun(*args,**kwargs):
t=time.perf_counter()
result=func(*args,**kwargs)
print(f'函数:{func.__name__}耗时:{time.perf_counter()-t:.8f}s')
returnresult
returnfun
@coast_time
deftest():
print('helloworld')
if__name__=='__main__':
test()

importasyncio
importtime
fromasyncio.coroutinesimportiscoroutinefunction
defcoast_time(func):
def免费云主机域名fun(*args,**kwargs):
t=time.perf_counter()
result=func(*args,**kwargs)
print(f'函数:{func.__name__}耗时:{time.perf_counter()-t:.8f}s')
returnresult
asyncdeffunc_async(*args,**kwargs):
t=time.perf_counter()
result=awaitfunc(*args,**kwargs)
print(f'函数:{func.__name__}耗时:{time.perf_counter()-t:.8f}s')
returnresult
ifiscoroutinefunction(func):
returnfunc_async
else:
returnfun
@coast_time
deftest():
print('hellotest')
time.sleep(1)
@coast_time
asyncdeftest_async():
print('hellotest_async')
awaitasyncio.sleep(1)
if__name__=='__main__':
test()
asyncio.get_event_loop().run_until_complete(test_async())
hellotest
函数:test耗时:1.00230700s
hellotest_async
函数:test_async耗时:1.00572550s

importasyncio
importtime
classCoastTime(object):
def__init__(self):
self.t=0
def__enter__(self):
self.t=time.perf_counter()
returnself
def__exit__(self,exc_type,exc_val,exc_tb):
print(f'耗时:{time.perf_counter()-self.t:.8f}s')
deftest():
print('hellotest')
withCoastTime():
time.sleep(1)
asyncdeftest_async():
print('hellotest_async')
withCoastTime():
awaitasyncio.sleep(1)
if__name__=='__main__':
test()
asyncio.get_event_loop().run_until_complete(test_async())
hellotest
耗时:1.00723310s
hellotest_async
耗时:1.00366820s