我的代码:
class Restaurant():
def init(self, name, foodtype): #创建一个名为Restaurant的类,其方法__init__()设置两个属性:restaurant_name和cuisine_type。
self.name = name
self.foodtype = foodtype
def describe_restaurant(self):
print (self.name.title() + "," + "" + self.foodtype.title())
def open_restaurant (self):
print (self.name.title() + "now is opening.")
调用的时候:
Restaurant1 = Restaurant("Chinese", "Asian food")
print (Restaurant1.describe_restaurant())
Chinese,Asian Food
None
请问下为什么调用了describe_restaurant()会在多出来一个None这一行?