python面向对象编程

花了一个下午把优达的的面向对象python课刷了，回去之前做个总结。
主要是两个例子

1 电影预告网页

1.1 mian

import mediaimport fresh_tomatoestoy_stort = media.Movie("Toy Story",                        "A story of a boy and his toys",                        "link",                        "link")# print(toy_stort.storyline)avatar = media.Movie("Avatar","A marinr on an alien plant", "Link","http://www.iqiyi.com/v_19rrn8vkts.html?vfm=2008_aldbd&fc=828fb30b722f3164&fv=p_02_01");# print(avatar.storyline)# avatar.show_traile()sanssans = media.Movie("Sanssans","A marinr on an alien plant", "Link","http://video.mtime.com/66932/?mid=225337")# sanssans.show_traile()moives = [toy_stort,avatar,sanssans]# fresh_tomatoes.open_movies_page(moives)# print(media.Movie.VALID_RATINGS)print(media.Movie.__doc__)

1.2 media

import webbrowserclass Movie():    """ This class provides a way to store movie related information """    VALID_RATINGS = ["G","PG","PG-13","R"]    def __init__(self,movie_title,movie_storyline,poster_image_url,trailer_url):        self.title = movie_title        self.storyline = movie_storyline        self.poster_image_url = poster_image_url        self.trailer_youtube_url = trailer_url    def show_traile(self):        webbrowser.open(self.trailer_youtube_url)

2 继承例子

child 初始化可以继承自Parent
当child中的show_info没有定义，可以调用Parent的方法

class Parent():    def __init__(self, last_name, eye_color):        print("Parent Constructor Called")        self.last_name = last_name        self.eye_color = eye_color    def show_info(self):        print("Last Name - "+self.last_name)        print("Eye Color - "+self.eye_color)class child(Parent):    def __init__(self, last_name, eye_color, number_of_toys):        print("Child Constructor Called")        Parent.__init__(self, last_name, eye_color)        self.number_of_toys=number_of_toys    def show_info(self):        print("Last Name - "+self.last_name)        print("Eye Color - "+self.eye_color)        print("number_of_toys -"+self.number_of_toys)biily_cyrus = Parent("Cyrus","blue")print(biily_cyrus.last_name)biily_cyrus.show_info()#miley_cyrus = child("Cyrus","blue","2")print(miley_cyrus.last_name)print(miley_cyrus.number_of_toys)miley_cyrus.show_info()