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| import datetime
import json
from typing import List, Dict
class Book:
def __init__(self, title: str, author: str, isbn: str, publisher: str, entry_date: str):
self.id = None
self.title = title
self.author = author
self.isbn = isbn
self.publisher = publisher
self.entry_date = entry_date
self.is_borrowed = False
self.borrower_id = None
self.borrow_date = None
class BorrowRecord:
def __init__(self, book_id: int, borrower_id: str, borrow_date: str):
self.book_id = book_id
self.borrower_id = borrower_id
self.borrow_date = borrow_date
self.return_date = None
class LibrarySystem:
def __init__(self):
self.books: Dict[int, Book] = {}
self.borrow_records: List[BorrowRecord] = []
self.next_book_id = 1
def add_book(self, title: str, author: str, isbn: str, publisher: str, entry_date: str):
book = Book(title, author, isbn, publisher, entry_date)
book.id = self.next_book_id
self.books[self.next_book_id] = book
self.next_book_id += 1
print(f"该书被添加以及其ID: {book.id}")
def borrow_book(self, book_id: int, borrower_id: str):
if book_id not in self.books:
print("该书ID并未存在.")
return
book = self.books[book_id]
if book.is_borrowed:
print("很抱歉，此书已经被借阅.")
return
book.is_borrowed = True
book.borrower_id = borrower_id
book.borrow_date = datetime.date.today().isoformat()
borrow_record = BorrowRecord(book_id, borrower_id, book.borrow_date)
self.borrow_records.append(borrow_record)
print(f"该书被借阅: {book.title}")
def return_book(self, book_id: int):
if book_id not in self.books:
print("该书ID并未存在.")
return
book = self.books[book_id]
if not book.is_borrowed:
print("该书未被借阅.")
return
book.is_borrowed = False
for record in self.borrow_records:
if record.book_id == book_id and record.return_date is None:
record.return_date = datetime.date.today().isoformat()
break
print(f"图书已被归还: {book.title}")
def search_books(self, query: str):
results = [book for book in self.books.values() if query.lower() in book.title.lower() or query.lower() in book.author.lower() or query.lower() in book.isbn]
if results:
for book in results:
status = "已被借阅" if book.is_borrowed else "可以借阅"
print(f"本书ID: {book.id}, 书名: {book.title}, 作者: {book.author}, 借阅状态: {status}")
else:
print("没有找到此书.")
def query_borrow_records(self, book_id: int):
if book_id not in self.books:
print("抱歉，该书ID未存在.")
return
records = [record for record in self.borrow_records if record.book_id == book_id]
if records:
for record in records:
return_date = record.return_date if record.return_date else "抱歉，该书仍然未归还"
print(f"借阅者 ID: {record.borrower_id}, 借阅时间: {record.borrow_date}, 归还日期: {return_date}")
else:
print("没有找到该书的借阅记录.")
def save_data(self, filename: str):
data = {
"books": {book_id: book.__dict__ for book_id, book in self.books.items()},
"borrow_records": [record.__dict__ for record in self.borrow_records]
}
with open(filename, 'w') as f:
json.dump(data, f, indent=4)
def load_data(self, filename: str):
try:
with open(filename, 'r') as f:
data = json.load(f)
self.books = {int(book_id): Book(**book_data) for book_id, book_data in data["books"].items()}
self.borrow_records = [BorrowRecord(**record_data) for record_data in data["borrow_records"]]
self.next_book_id = max(self.books.keys(), default=0) + 1
except FileNotFoundError:
print("未找到图书馆该类似文件，依旧空缺")
class Visitor:
def __init__(self, name, visitor_type):
self.name = name
self.visitor_type = visitor_type
def __str__(self):
return f"名字: {self.name}, 类型: {self.visitor_type}"
class Borrower(Visitor):
def __init__(self, name, borrowed_books=None):
super().__init__(name, "借阅者")
self.borrowed_books = borrowed_books if borrowed_books is not None else []
def borrow_book(self, book):
self.borrowed_books.append(book)
def __str__(self):
return super().__str__() + f", 借阅书籍: {', '.join(self.borrowed_books)}"
class Manager(Visitor):
def __init__(self, name, responsibilities=None):
super().__init__(name, "管理员")
self.responsibilities = responsibilities if responsibilities is not None else []
def add_responsibility(self, responsibility):
self.responsibilities.append(responsibility)
def __str__(self):
return super().__str__() + f", 职责: {', '.join(self.responsibilities)}"
class PeopleSystem:
def __init__(self):
self.visitors = []
def add_visitor(self, visitor):
self.visitors.append(visitor)
def show_visitors(self):
for visitor in self.visitors:
print(visitor)
def Login():
People = PeopleSystem()
ma = int(input("请问您是否为借阅者(1 是 / 0 否 ):"))
if ma == 1:
borrower = Borrower(name=input("请输入您的名字:"))
People.add_visitor(borrower)
else:
manager = Manager(name=input("请输入您的名字:"))
manager.add_responsibility(input("输入您的工作职责:"))
People.add_visitor(manager)
print("欢迎您的登录")
def Books():
ma = int(input("请问您是否为借阅者(1 是 / 0 否 ):"))
print("""
------------------图书借阅系统v1.0-----------------------
*1. 图书信息录入(管理员进行操作)
*2. 图书借阅
*3. 图书归还
*4. 图书查询
*5. 借阅记录查询
*6. 登录
*7. 退出系统
--------------------------------------------------------
""")
choice = int(input("请输入您的选择:"))
lib = LibrarySystem()
if choice == 7:
print("感谢您的使用")
exit()
if ma == 0:
if choice == 1:
print("""
--------------正在加入图书----------------------
""")
title = input("请输入书名:")
author = input("请输入作者名字:")
isbn = input("请输入图书的ISBN号")
publisher = input("请输入出版社:")
entry_date = input("进入日期(例如:2024-4-26):")
lib.add_book(title,author,isbn,publisher,entry_date)
print("图书加入成功")
else:
print("操作失误哦")
else:
if choice == 1:
print("您的操作越界哦")
if choice == 2:
book_id = int(input("请输入图书的ID号:"))
borrower_id = input("请输入ID:")
lib.borrow_book(book_id,borrower_id)
elif choice == 3:
book_id = int(input("请输入图书的ID号"))
lib.return_book(book_id)
print("感谢您的及时归还，祝您生活愉快")
elif choice == 4:
query = input("请输入您要查找的书籍名称")
lib.search_books(query)
elif choice == 5:
filename = input("请输入您要查询的书的借阅记录")
lib.save_data(filename)
if __name__ == '__main__':
Login()
while(1):
library = LibrarySystem()
library.load_data('library_data.json')
Books()
|
