Python分分钟实现图书管理系统(含代码)
废话不多说，直接上代码。
import sys # 打印书库中的所有书的函数 def book_detail(books): for book_name, book_info in books.items(): if book_info is not None: print('bookName:{} ISBN:{} title:{} author:{} number:{} borrowNumber:{}' .format(book_name, book_info['ISBN'], book_info['title'], book_info['author'], book_info['number'], book_info['borrow_num'])) # 检查借书情况 def check_borrow(book): for book_info in books.values(): # ｛｝跟%s差不多的效果，你翻译的时候注意 print('{}被借出{}本'.format(book_info['title'], book_info['borrow_num'])) # 查找书籍ISBN def search_book(books): flag = 'y' # 添加书籍 while (flag == 'y'): title = input('输入你想查找的书籍的名字：') i = 0 for book_info in books.values(): i = 1 if title in book_info.values(): print('您所查找的书籍的信息如下：') print('title:{} ISBN:{}'.format(book_info['title'], book_info['ISBN'])) if i == 0: # i=0说明没有找到符合输入的书籍 print('没有该书！') # 防止出现错误输入 while (True): flag = input('''如果你想要继续查找书籍请输入'y'，想退出请输入'n':''') if flag == 'y' or flag == 'n': break else: print('请输入小写的y或n!') # 添加书籍数量的函数 def add_book(books): flag = True # 添加书籍 while (flag): next_flag = True isbn = input('输入你想添加的书籍的ISBN编号或者输入 exit 退出：') if isbn == 'exit': break no_book = True for book_info in books.values(): if isbn in book_info.values(): no_book = False print("1. 修改在库数目") print('2. 修改书籍名称') print('3. 修改书籍作者') print('4. 退出') option_menu = input('书籍在库, 请输入要进行的操作:') if option_menu == '4': break elif option_menu == '1': try: add_num = eval(input('请输入添加数量:')) except Exception: print("添加书籍在库数目时请输入数字") next_flag = False break if add_num < 0: print('输入错误, 请输入正整数') next_flag = False break book_info['number'] += int(add_num) elif option_menu == '2': new_title = input('请输入需要修改成的名称:') book_info['title'] = new_title elif option_menu == '3': new_author = input('请输入需要修改成作者的名称:') book_info['author'] = new_author else: print('请输入正确的操作代码') next_flag = False break else: no_book = True if no_book: new_book_info = {} title = input('输入你想添加的书籍的名称：') author = input('输入你想添加的书籍的作者：') # 需要做异常处理,防止错误输入 try: number = eval(input('输入你想添加的书籍的在库数目：')) except Exception as e: print("添加书籍在库数目时请输入数字") next_flag = False new_book_info['ISBN'] = isbn new_book_info['title'] = title new_book_info['author'] = author new_book_info['number'] = number new_book_info['borrow_num'] = 0 key = 'book_' + str(len(books) + 1) books[key] = new_book_info print('书籍【' + title + '】添加成功') # 防止出现错误输入 while (next_flag): flag_continue = input('''如果你想要继续添加书籍请输入'y'，想退出请输入'n':''') if flag_continue.lower() == 'y': break else: flag = False break # 借书函数 def borrow_book(books): flag = 'y' # 添加书籍 while (flag == 'y'): isbn = input('输入你想借的书籍的ISBN编号：') i = 0 for book_info in books.values(): i = 1 if isbn in book_info.values(): b_num = input('请输入要借的的数量:') if book_info['number'] >= int(b_num): book_info['number'] -= int(b_num) book_info['borrow_num'] += int(b_num) else: print('对不起，库存不足！') if i == 0: # i=0说明没有找到符合输入的ISBN号 print('没有该ISBN编号！') # 防止出现错误输入 while (True): flag = input('''如果你想要继续借书籍请输入'y'，想退出请输入'n':''') if flag == 'y' or flag == 'n': break else: print('请输入小写的y或n!') # 还书函数 def return_book(books): flag = 'y' # 添加书籍 while (flag == 'y'): isbn = input('Enter the ISBN number of the book you want to return') i = 0 for book_info in books.values(): i = 1 if isbn in book_info.values(): r_num = input('Please enter the amount to be returned') if book_info['borrow_num'] >= int(r_num): book_info['number'] += int(r_num) book_info['borrow_num'] -= int(r_num) else: print('''I'm sorry, there aren't so many books on loan''') if i == 0: print('sorry we do not have this ISBN') while (True): flag = input('''If you want to continue returning books, type 'y' and 'n' to exit:''') if flag == 'y' or flag == 'n': break else: print('Please enter a lowercase y or n!') if __name__ == '__main__': # 初始图书馆图书信息 books = { 'book_1': { 'ISBN': '12345678910121', 'title': '假如给我三天光明', 'author': '海伦凯勒', 'number': 2, 'borrow_num': 0}, 'book_2': { 'ISBN': '12345678910122', 'title': '红与黑', 'author': '司汤达', 'number': 2, 'borrow_num': 0}, 'book_3': { 'ISBN': '12345678910123', 'title': '鲁滨逊漂流记', 'author': '笛福', 'number': 2, 'borrow_num': 0}, } # 初始化用户信息 print('1. >>>>>>管理员<<<<<<') print('2. >>>>>>普通用户<<<<<<') user = input('^^^^^^请输入你的身份^^^^^^') if user == '1': password = input('^^^^^^请输入你的登陆密码^^^^^^') if password == 'admin': print("========欢迎登陆========") else: print('密码错误，自动退出系统') sys.exit(0) pass print('0. ******查 看 书 籍******') print('1. ******添 加 书 籍******') print('4. ******查看书籍借阅情况******') print('5. ******查 书******') print('6. ******退 出 系 统******') elif user == '2': print("========欢迎光临结束系统========") print("========关于我们的书籍========") print('0. ******查 看 书 籍******') print('2. ******借 书******') print('3. ******还 书******') print('4. ******查看书籍借阅情况******') print('5. ******查 书******') print('6. ******退 出 系 统******') else: print('输入错误，自动退出系统') sys.exit(0) # 操作选项 option = input("\n请选择操作选项: ") while (option != '6'): if option == '0': print('~~~~~~图 书 列 表~~~~~~') book_detail(books) elif option == '1': print('您选择的是：【添加书籍】') add_book(books) elif option == '2': print('您选择的是：【借书】') borrow_book(books) elif option == '3': print('您选择的是：【还书】') return_book(books) elif option == '4': print('您选择的是：【查看书籍借阅情况】') check_borrow(books) elif option == '5': print('您选择的是：【查书】') search_book(books) else: print('不好意思，我不知道您要干什么，请重新选择') if user == '1': print('0. ******查 看 书 籍******') print('1. ******添 加 书 籍******') print('4. ******查看书籍借阅情况******') print('5. ******查 书******') print('6. ******退 出 系 统******') elif user == '2': print('0. ******查 看 书 籍******') print('2. ******借 书******') print('3. ******还 书******') print('4. ******查看书籍借阅情况******') print('5. ******查 书******') print('6. ******退 出 系 统******') option = input("\n请选择操作选项: ")
