图书馆借阅系统，不知道要咋编了

Question

 

Answer 1

#定义书籍类，基本信息有书名title和作者anthor
#借阅者borrower和待借阅者demanders(列表)
class Book(object):
    def __init__(self,title='',author=''):
        self.title=title
        self.author=author
    def info(self):
        return(self.title,self.author)
    def reader(self,borrower='',demanders=[]):
        self.borrower=borrower
        self.demanders=demanders
#定义借阅者类，基本信息有姓名name,性别sex,身份证号ID
#该借阅者借阅的书籍bookName(列表)
class Patron(object):
    def __init__(self,name='',sex='',ID='',borrowBooks=[]):
        self.name=name
        self.sex=sex
        self.ID=ID
        self.borrowBooks=borrowBooks
    def info(self):
        return(self.name,self.sex,self.ID,self.borrowBooks)
    #flag=1时，代表借书，flag=0时，代表还书
    def book(self,borrowBooks=[],title='',flag=1):
        #确保借阅者最多可借3本书
        if len(borrowBooks)<4  or flag==0:
            if flag==1:
                borrowBooks.append(title)
            else:
                borrowBooks.remove(title)
        else:
            print("最多可借阅三本图书！")
        return borrowBooks
class Library(object):
    """some operation on books and readers"""
    #some operation on books
    # add book
    def addBook(self,books=[],book=Book()):
        books.append(book.title)
        return books
    #delete book
    def deleteBook(self,books,book=Book()):
        books.remove(book.title)
        return books
    #find book,and return the index of the book
    def findBook(self,books,book=Book()):
        return books.index(book.title)
    
    #some operation on  readers
    #add reader    
    def addReader(self,readers=[],patron=Patron()):
        readers.append(patron.name)
        return readers
    #delete reader
    def deleteReader(self,readers,patron=Patron()):
        readers.remove(patron.name)
        return readers
    #find reader,and return the index of the reader
    def findReader(self,readers,patron=Patron()):
        return readers.index(patron.name)
    
    #some operation on borrow and return book
    #borrow book
    def borrowBook(self,patron=Patron(),book=Book()):
        books.remove(book.title)
        patron.book(patron.borrowBooks,book.title,1)
        return books,patron.borrowBooks
    #return book
    def returnBook(self,patron=Patron(),book=Book()):
        books.append(book.title)
        patron.book(patron.borrowBooks,book.title,0) 
        return books,patron.borrowBooks
#测试
if __name__=="__main__":
    library=Library()      #创建Library类
    books=[]               #在图书馆的书
    readers=[]             #图书馆读者列表
    #创建了4个Book类实例（4本书）
    book1=Book("Gone with the Wind","Margaret Mitchell")
    book2=Book("Pride and Prejudice","Jane Austen")
    book3=Book("Oliver Twist","Charles Dickens")
    book4=Book("The Little Prince","Antoine de Saint-Exupéry")
    #创建了5个Patron类实例（5个借阅者）
    patron1=Patron("Jack","man","121")
    patron2=Patron("Bob","man","122")
    patron3=Patron("Tim","man","123")
    patron4=Patron("Ann","woman","124")
    patron5=Patron("Jane","woman","125")
    
    #图书的相关操作展示
    #向books添加这些书
    library.addBook(books,book1)
    library.addBook(books,book2)
    library.addBook(books,book3)
    library.addBook(books,book4)
    #此时，结果：['Gone with the Wind','Pride and Prejudice','Oliver Twist','The Little Prince']
    library.deleteBook(books,book3)
    #此时，结果：['Gone with the Wind', 'Pride and Prejudice', 'The Little Prince']
    library.findBook(books,book2)
    #此时，结果：1
    
    #读者的相关操作展示
    #向readers添加这些借阅者
    library.addReader(readers,patron1)
    library.addReader(readers,patron2)
    library.addReader(readers,patron3)
    library.addReader(readers,patron4)
    library.addReader(readers,patron5)
    #此时，结果：['Jack', 'Bob', 'Tim', 'Ann', 'Jane']
    library.deleteReader(readers,patron2)
    #此时，结果：['Jack', 'Tim', 'Ann', 'Jane']
    library.findReader(readers,patron4)
    #此时，结果：2
    
    #借阅图书和归还图书的操作
    #借阅图书操作
    library.borrowBook(patron1,book1)
    library.borrowBook(patron1,book2)
    #此时，结果：books= ['The Little Prince']
    #patron1.borrowBooks=['Gone with the Wind', 'Pride and Prejudice']
    #验证一下，一个借阅者最多可借3本书
    library.addBook(books,book3)
    library.borrowBook(patron1,book3)
    #当下面一句执行时，会打印最多可借3本书
    library.borrowBook(patron1,book4)
    
    #归还图书操作
    library.returnBook(patron1,book1)
    #此时，结果：books=['Gone with the Wind']
    #patron1.borrowBooks= ['Pride and Prejudice', 'Oliver Twist', 'The Little Prince']
    

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