python day 27
Recently there are so many Singing TV shows, The Big Band, Super Band, Sisters in Winds and Waves, Rap of China. So today let’s make a Python Abstract Class that is able to pass to subclasses and print out song lyrics about cute animals.
Why do we choose these songs?
Because it’s my program so i can print out the songs I like!
If you have different choices, It is a great time to start making your own program!
Key Point:
ABCs, ABCMeta, abstractmethod
The module grant us to contsruct an Abstract Bases Class, which only declare, but contains NO implementation.
It requires subclasses to provide implementations for the abstract methods.
Python Code:
from abc import ABCMeta, abstractmethod class pet(object, metaclass=ABCMeta): def __init__(self, nickname): self._nickname= nickname @abstractmethod def song(self): pass class snail(pet): def song(self): print("a little %s is going up step by step! \n小小 %s 要一步一步往上爬! \n" %(self._nickname,self._nickname ), end="\n") class kitty(pet): def song(self): print("Let's be %s meow meow meow, make a little naughty sound \n我们一起学 %s 叫，一起喵喵喵喵... \n" %(self._nickname,self._nickname), end="\n") class dragon(pet): def song(self): print("There's a %s in the far east, his name is China \n遥远的东方有一条 %s，他的名字叫中国 \n" %(self._nickname,self._nickname), end="\n") class horse(pet): def song(self): print("You are like a wild %s , but i dont have a land of grass. \n你是一匹野 %s, 可惜我家里没有草原 \n" %(self._nickname,self._nickname), end="\n")
Make a Def to call the class
def pet_song(): pets=[snail("snail"), kitty("kitty"), dragon("dragon"), horse("horse")] for pet in pets: pet.song() pet_song()
Output:
a little snail is going up step by step! 小小 snail 要一步一步往上爬! Let's be kitty meow meow meow, make a little naughty sound 我们一起学 kitty 叫，一起喵喵喵喵... There's a dragon in the far east, his name is China 遥远的东方有一条 dragon，他的名字叫中国 You are like a wild horse , but i dont have a land of grass. 你是一匹野 horse, 可惜我家里没有草原
Happy Studying and Have fun singing!!
Ref:
歌曲：
蜗牛-周杰伦 jay chou
一起学猫叫 – 小峰峰
龙的传人 -王力宏 leehom wang
董小姐- 宋东野