-4

你好，我正在做一个项目，我需要：

- 在你的 python 脚本中定义一个“教科书”类。

-为您拥有的5本教科书创建一个教科书课程列表。

- 制作所有五本教科书的摘要，如最后所示。

我相信我已经掌握了所有必要的信息，但是在运行以下脚本时出现此错误：

summarise() 缺少 1 个必需的位置参数：“文本”

我究竟做错了什么？我对 Python/Anaconda 很不擅长（不管有什么区别）脚本如下：

class Textbook:
    def __init__(self,name):
        self.name=name
    def title(self,text):
        self.title=text
    def author(self,text):
        self.author=text
    def publisher(self,text):
        self.publisher=text
    def year(self,text):
        self.year=text
    def course(self,text):
        self.course=text
    def semester(self,text):
        self.semester=text
    def summarize(self,text):
        self.summarize=text

my_textbooks=[]   

mybook1 = Textbook('1')

mybook1.title="Introduction to Python Class"

mybook1.author="Inseok Song"

mybook1.publisher="UGA"

mybook1.year=2016

mybook1.course="PHYS2001"

mybook1.semester="2016Fa"

my_textbooks.append( mybook1 )    







mybook2 = Textbook('2')

mybook2.title="Calculus III"

mybook2.author="LaFollette"

mybook2.publisher="Blackwell"

mybook2.year=2006

mybook2.course="MATH 2270"

mybook2.semester="2017Fa"

my_textbooks.append( mybook2 )     







mybook3 = Textbook('3')

mybook3.title="Why Be Good"

mybook3.author="John Hardwin"

mybook3.publisher="Corner Mill"

mybook3.year=2016

mybook3.course="PHIL 3400"

mybook3.semester="2017Fa"

my_textbooks.append( mybook3 )     







mybook4 = Textbook('4')

mybook4.title="Astronomy for Beginners"

mybook4.author="J.P Callault"

mybook4.publisher="UGA"

mybook4.year=2017

mybook4.course="ASTR 1110"

mybook4.semester="2017Fa"

my_textbooks.append( mybook4 )      







mybook5 = Textbook('5')

mybook5.title="Integrated Chinese"

mybook5.author="Chuan-Har Liu"

mybook5.publisher="UGA"

mybook5.year=2016

mybook5.course="CHNS 2001"

mybook5.semester="2017Fa"

my_textbooks.append( mybook5 )      





for book in my_textbooks:
    book.summarize()
4

1 回答 1

0

Python 不是 Java。您不需要为每个属性设置 setter 函数。

使用__init__方法来初始化你的对象：

class Textbook:
    def __init__(self, title, author, publisher, year,
                 course, semester):
        self.title = title
        self.author = author
        self.publisher = publisher
        self.year = year
        self.course = course
        self.semester = semester

    def summarize(self):
        s = '{:40s} {:15s} {:15s} {:4d} {:8s} {:7s}'
        return s.format(self.title, self.author,
                        self.publisher, self.year,
                        self.course, self.semester)


my_textbooks=[]

mybook1 = Textbook("Introduction to Python Class", "Inseok Song",
                   "UGA", 2016, "PHYS2001", "2016fa")
my_textbooks.append(mybook1)
# You can also create a textbook and add it to the list at
# the same time.
my_textbooks.append(Textbook("Calculus III", "LaFollette",
                   "Blackwell", 2006, "MATH2270", "2017fa"))
for book in my_textbooks:
    # Print whatever you like as a summary
    print(book.summarize())
于 2017-11-09T05:58:42.497 回答