p0011 装饰器

def (x):
	return x*x

def (x):
	return x*x
square = trace(square)

def wai(obj):
	def nei():
		print("这是增加的功能")
		return obj()
	return nei

@wai
def func():
	print("这是原始的功能")
	return "哈*3"

print(func())

# 海拔装饰
def dlevation(obj):
	def wrapper(temp):
		return obj(temp + 100)
	return wrapper

@dlevation
def tree(temp):
	return temp

res = tree(123)
print(res)

enableTracing = True

if enableTracing:
	debugLog = open("debug.log","w")

def trace(func):
	if enableTracing:
		def callf(*args,**kwargs):
			debugLog.write("Calling %s: %s,%s n" % (func.__name__, args,kwargs))
			r = func(*args,**kwargs)
			debugLog.write("%s returned %sn" % (func.__name__, r))
			debugLog.close()
			return r
		return callf
	else:
		return func


def (*args,**kwargs):
	print(1)

square(1,2,3,a = 1,b = 2,c =3)


#Calling square: (1, 2, 3),{'c': 3, 'a': 1, 'b': 2} 
#square returned None