import time
def performance(f):
def fn(*args, **kw):
t1 = time.time()
r = f(*args, **kw)
t2 = time.time()
print 'call %s() in %fs' % (f.__name__, (t2 - t1))
return r
return fn
@performance
def factorial(n):
return reduce(lambda x,y: x*y, range(1, n+1))
print factorial(10)我把这串代码复制到本地电脑上执行,发现提示以下错误,请大神知道一下!谢谢!
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