Python_类和装饰器

class Student(object):
def __init__(self,name,grade):
self.name=name
self.grade=grade

def introduce(self):
print("hello,i'm ", self.name,end="")
print(", my grade is ",self.grade,"!")
print("-----------------------")

def change(self,num):
self.grade = self.grade + num

jim=Student("jim",50)
jim.introduce()
jim.change(10)
jim.introduce()

#装饰器
#函数可以直接做函数形参 ,可以作为函数返回值
def add_candles(cake_func):
def insert_candles():
return cake_func() + ' and candles'
return insert_candles
@add_candles
def make_cake():
return 'cake'
print(make_cake())