python - 如何打印出存储在数组而不是对象中的属性？

Question

如何打印出存储在数组而不是对象中的章节名称的属性？

class Book:
    def __init__(self):
        self._chapters = []

    def addchapter(self, chapter):
        self._chapters.append(chapter)

    def getchapters(self):
        #How do I print out ["First", "Second", "Third"] instead?
        print(self._chapters) #<- prints out [<__main__.Chapter object at 0x10b849c40>, <__main__.Chapter object at 0x10b8901f0>, <__main__.Chapter object at 0x10b890310>]


class Chapter:
    def __init__(self, chaptername):
        self._chaptername = chaptername

    def __str__(self):
        return f"{self._chaptername}"


b = Book()
b.addchapter( Chapter("First") )
b.addchapter( Chapter("Second") )
b.addchapter( Chapter("Third") )
b.getchapters() 

我是python新手，所以我不确定实现这一目标的方法是什么，如果有人能帮助我，我将不胜感激！谢谢

标签： pythonarraysobjectprintinginstance

Answer 1

您想要覆盖__repr__而不是__str__.