-sharp -*- coding: utf-8 -*-
import time, functools
def metric(fn):
-sharp
def wrapper(*args, **kw):
startTime = time.time()
tmp = fn(*args, **kw)
endTime = time.time()
print("%s executed in %s s" % (fn.__name__, endTime - startTime ))
return tmp
return wrapper
Why do you fill in @ funtools.wraps (fn)?
needs to copy the _ _ name__ and other attributes of the original function into the wrapper () function, otherwise, some code execution that depends on the function signature will go wrong.
Let me explain the answer of joy sheet again. Use this decorator to decorate the function. Print func.__name__ is the name of the wrapper, function has been changed, but if the decorator @ functools.wraps (fn) is added, the print func.__name__ is still the original name of the function
.from functools import wraps def single(cls): sets={} print(sets) @wraps(cls) def wrapper(*args,**kw): if ex not in sets: sets[ ex ]=cls(*args,**kw) return sets[ ex ] return wrapper @single clas...
Hello, everyone. The thing is, there is a micro service. Now you need to add decorators to different functions under different py, although you can add one by one manually, but it feels very slow, so is there a way to dynamically add decorators to each f...