如何在 Python 中（自动）测量函数的执行时间
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how to measure execution time of functions (automatically) in Python
提问by pars
I need to have a base classwhich I will use to inherit other classes which I would like to measure execution time of its functions.
我需要有一个基类，我将使用它来继承其他类，我想测量其函数的执行时间。
So intead ofhaving something like this:
所以，而不是有这样的事情：
class Worker():
def doSomething(self):
start = time.time()
... do something
elapsed = (time.time() - start)
print "doSomething() took ", elapsed, " time to finish"
#outputs: doSomething() took XX time to finish
I would like to have something like this:
我想要这样的东西：
class Worker(BaseClass):
def doSomething(self):
... do something
#outputs the same: doSomething() took XX time to finish
So the BaseClass needs to dealing with measuring time
所以 BaseClass 需要处理测量时间
回答by Geoff Reedy
One way to do this would be with a decorator (PEP for decorators)(first of a series of tutorial articles on decorators). Here's an example that does what you want.
一种方法是使用装饰器（装饰器的PEP）（装饰器系列教程文章的第一篇）。这是一个可以执行您想要的操作的示例。
from functools import wraps
from time import time
def timed(f):
@wraps(f)
def wrapper(*args, **kwds):
start = time()
result = f(*args, **kwds)
elapsed = time() - start
print "%s took %d time to finish" % (f.__name__, elapsed)
return result
return wrapper
This is an example of its use
这是它的使用示例
@timed
def somefunction(countto):
for i in xrange(countto):
pass
return "Done"
To show how it works I called the function from the python prompt:
为了展示它是如何工作的，我从 python 提示符调用了这个函数：
>>> timedec.somefunction(10000000)
somefunction took 0 time to finish
'Done'
>>> timedec.somefunction(100000000)
somefunction took 2 time to finish
'Done'
>>> timedec.somefunction(1000000000)
somefunction took 22 time to finish
'Done'
回答by p.marino
Have you checked the "profile" module?
您是否检查过“个人资料”模块？
I.e. are you sure you need to implement your own custom framework instead of using the default profiling mechanism for the language?
即，您确定需要实现自己的自定义框架而不是使用该语言的默认分析机制吗？
You could also google for "python hotshot" for a similar solution.
您也可以在 google 上搜索“python hotshot”以获得类似的解决方案。
