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import yaml
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class Book:
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def __init__(self,bid,name,price,summary):
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self.bid = bid
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self.name = name
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self.price = price
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self.summary = summary
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def __str__(self):
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return f'图书编号:{self.bid},书名：{self.name},图书价格：{self.price},图书简介：{self.summary}'
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class BookManagemen:
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def __init__(self):
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self.__books = []
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def __menu(self):
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print("*****************************")
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print("* 图书管理系统 *")
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print("* 1. 添加新图书信息 *")
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print("* 2. 通过编号修改图书信息 *")
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print("* 3. 通过编号删除图书信息 *")
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print("* 4. 通过书名删除图书信息 *")
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print("* 5. 通过编号查询图书信息 *")
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print("* 6. 通过书名查询图书信息 *")
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print("* 7. 显示所有图书信息 *")
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print("* 8. 退出系统 *")
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print("*****************************")
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select_op = input('请输入需要选择的选项')
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return select_op
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def __get_bid(self):#获取图书编号
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bid = input("请输入图书编号：")
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return bid
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def __get_name(self):#获取图书名称
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name = input("请输入图书名称：")
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return name
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def __get_price(self):#获取图书价格
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while True:
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price = input("请输入图书价格：")
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if price.isdigit():
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return int(price)
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else:
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print("请输入正确格式数字：")
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def __get_summary(self):
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summary = input("请输入图书简介：")
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return summary
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def __add_book(self,bid,name,price,summary):#添加书本
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for s in self.__books:
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if s.bid == bid:
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print(f"{bid}已存在,添加失败")
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return "添加失败"
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book = Book(bid,name,price,summary)
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self.__books.append(book)
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def __modify_book_by_bid(self,bid,name,price,summary):#通过编号修改图书信息
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for s in self.__books:
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if s.bid == bid:
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s.name = name
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s.price = price
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s.summary = summary
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print("修改成功")
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return '修改成功'
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print(f"图书编号{bid}不存在")
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return "修改失败"
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def __delete_book_by_bid(self,bid):#通过编号删除图书
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for s in self.__books:
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if s.bid == bid:
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self.__books.remove(s)
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print(f"图书{s.name}删除成功")
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return"删除成功"
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print("无此图书编号")
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return "删除失败"
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def __delete_book_by_name(self,name):#通过书名删除图书
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del_book = []
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for s in self.__books:
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if s.name == name:
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del_book.append(s)
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if len(del_book) > 0:
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for i in del_book:
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self.__books.remove(i)
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print(f"成功删除{len(del_book)}本名为{name}的书")
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return "删除成功"
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else:
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print(f'书本{name}不存在')
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return "删除失败"
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def __select_book_by_bid(self,bid):#通过编号查询图书
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for s in self.__books:
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if s.bid == bid:
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print("图书信息为：")
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print(f"图书编号：{s.bid},图书名称：{s.name},图书价格：{s.price},图书简介：{s.summary}")
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return '查询成功'
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print(f"图书编号{bid}不存在")
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return '查询失败'
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def __select_book_by_name(self,name):#通过名称查询图书
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select_book = []
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for s in self.__books:
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if s.name == name:
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select_book.append(s)
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if len(select_book) > 0:
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print("图书信息为：")
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for i in select_book:
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print(f"图书编号：{i.bid},图书名称：{i.name},图书价格：{i.price},图书简介：{i.summary}")
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return '查询成功'
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else:
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print(f"图书名称{name}不存在")
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return '查询失败'
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def __show(self):
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print("所有图书信息如下：")
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for s in self.__books:
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print(f"图书编号：{s.bid},图书名称：{s.name},图书价格：{s.price},图书简介：{s.summary}")
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def manager(self):
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while True:
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select_op = self.__menu()
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if len(select_op) == 1 and int(select_op) in range(1,9):
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if select_op == '1':
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bid = self.__get_bid()
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name = self.__get_name()
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price = self.__get_price()
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summary = self.__get_summary()
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self.__add_book(bid,name,price,summary)
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elif select_op == '2':
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bid = self.__get_bid()
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name = self.__get_name()
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price = self.__get_price()
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summary = self.__get_summary()
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self.__modify_book_by_bid(bid, name, price, summary)
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elif select_op == '3':
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bid = self.__get_bid()
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self.__delete_book_by_bid(bid)
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elif select_op == '4':
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name = self.__get_name()
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self.__delete_book_by_name(name)
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elif select_op == '5':
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bid = self.__get_bid()
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self.__select_book_by_bid(bid)
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elif select_op == '6':
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name = self.__get_name()
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self.__select_book_by_name(name)
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elif select_op == '7':
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self.__show()
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else:
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break
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else:
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print('输入的字符不合法,请重新输入')
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if __name__ == '__main__':
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bm = BookManagemen()
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bm.manager()
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