6. Python 리스트 Comprehension

article.text for article in self.articles 방식으로 리스트를 생성할 수 있다.

class Text:
    def __init__(self, str):
        self.text = str

    def __str__(self):
        return "Text: " + self.text

class User:
    num_users = 0               # class 변수

    def __init__(self, name):
        self.numArticle = 0     # instance 변수
        self.name = name
        self.articles = []
        User.num_users += 1

    def write(self, text):
        self.articles.append(text)
        self.numArticle += 1

    def __str__(self):
        return "User: %s %s" % (self.name, self.articles)
        #return "User: %s %s" % (self.name, [article.text for article in self.articles]) 로 해주면 2번째 출력 결과가 나옴

t  = Text("This is some text")
t2 = Text("This is some text2")
user = User('honux')

user.write(t)
user.write(t2)

print(t)
print(user, user.numArticle)

'''
Text: This is some text
User: honux [<__main__.Text object at 0x1032c50b8>, <__main__.Text object at 0x1032c50f0>] 2

Text: This is some text
User: honux ['This is some text', 'This is some text2'] 2
'''