Python函数中的函数(闭包)用法实例

def make_adder(addend):
 def adder(augend):
  return augend + addend
 return adder
p = make_adder(23)
q = make_adder(44)
print(p(100))
print(q(100))

def hellocounter (name):
 count=[0]
 def counter():
  count[0]+=1
  print('Hello,',name,',',count[0],' access!')
 return counter
hello = hellocounter('ma6174')
hello()
hello()
hello()

tantengdeMacBook-Pro:learn-python tanteng$ python3 closure.py 
Hello, ma6174 , 1 access!
Hello, ma6174 , 2 access!
Hello, ma6174 , 3 access!