import keyboard
import time
bookinformation = []
bookinformation_number = 0
class Menu:
#用于创建菜单界面
def showmenu(self):
while True:
print('''欢迎来到图书管理系统,请按下对应的数字键选择功能：
添加图书 —— 1
查询图书 —— 2
借阅\归还图书 —— 3
删除图书 —— 4
修改书籍信息 —— 5
显示所有书籍 —— 6
退出系统 —— 7''')
while True:
if keyboard.is_pressed('1'):
buffer = input('请忽略本条信息，按回车键继续')
# buffer 的作用是为了解决按下 数字键 1 后会将1这个字符代入到后面的input()当中的冲突
Bookmanager.addbooks(self)
break
elif keyboard.is_pressed('2'):
buffer = input('请忽略本条信息，按回车键继续')
Bookmanager.searchbooks(self)
break
elif keyboard.is_pressed('3'):
buffer = input('请忽略本条信息，按回车键继续')
Bookmanager.borrow_return_books(self)
break
elif keyboard.is_pressed('4'):
buffer = input('请忽略本条信息，按回车键继续')
Bookmanager.deletebooks(self)
break
elif keyboard.is_pressed('5'):
buffer = input('请忽略本条信息，按回车键继续')
Bookmanager.editbooks(self)
break
elif keyboard.is_pressed('6'):
buffer = input('请忽略本条信息，按回车键继续')
Bookmanager.showallbooks(self)
break
elif keyboard.is_pressed('7'):
return
else:
continue
class Bookmanager:
def save(self):
file = open('Bookinformation.txt','a+')
#因为要添加图书，所以用 a+ 方式打开， 也可以用 r+，但是指针的位置不一样，可能会影响后面的代码
# w+ 的话就直接覆盖了，所以不行
for book in bookinformation:
for i in book:
file.write(i)
file.write('\t')
file.write('\n')
file.close()
#一开始的思路是，一次连续输入所有信息，用tab键分隔，但是觉得麻烦
#def addbooks(self):
# global bookinformation_number
# global bookinformation
# while true:
# information = input('请依次输入书的名字、作者、类型、添加日期，以及备注（请用tab分隔不同的信息）\n')
# information += '\t'
# information_mediator = []
# one_information = ''
# information_array = []
# whether_to_execute = 0
# for i in information:
# if i == '\t':
# whether_to_execute += 1
# if whether_to_execute >= 5:
# for character in information:
# if character.encode() == '\t'.encode():
# for character in information_mediator:
# one_information += character
# if one_information != '':
# information_array.append(one_information)
# one_information = ''
# information_mediator = []
# else:
# information_mediator.append(character)
# name = information_array[0]
# author = information_array[1]
# genre = information_array[2]
# add_date = information_array[3]
# marker = information_array[4]
# del information_array[5:]
# bookinformation.append(information_array)
# bookinformation_number += 1
# print('''成功添加图书
# 新书名字是 %s
# 作者是 %s
# 类型是 %s
# 添加日期是 %s
# 备注是 %s'''%(name,author,genre,add_date,marker))
# print('如添加有误，请按f键；正确请按j键')
# while true:
# if keyboard.is_pressed('f'):
# del bookinformation[bookinformation_number-1]
# print('已删除此信息，开始重新添加')
# bookinformation_number -= 1
# break
# elif keyboard.is_pressed('j'):
# break
# else:
# continue
# time.sleep(0.2)
# print('继续添加图书信息请按f键，退出请按j键')
# while true:
# if keyboard.is_pressed('f'):
# break
# elif keyboard.is_pressed('j'):
# bookmanager.save(self)
# bookinformation = []
# bookinformation_number = 0
# return
# else:
# continue
# else:
# print('您的输入不完全或者有误，请重新输入')
# buffer = input('请忽略本行内容，继续敲击回车键')
def addbooks(self):
global bookinformation
global bookinformation_number
bookinformation_number = 0
bookinformation = []
while True:
bookinformation_mediator = []
name = input('请输入书名：')
author = input('请输入作者：')
genre = input('请输入所属类型：')
marker = input('请输入备注：')
date = time.strftime("%Y-%m-%d",time.localtime())
#自动获取当天的日期，并添加至列表内
availability = '可借阅'
#默认的可用性是 可借阅
bookinformation_mediator.append(name)
bookinformation_mediator.append(author)
bookinformation_mediator.append(genre)
bookinformation_mediator.append(date)
bookinformation_mediator.append(marker)
bookinformation_mediator.append(availability)
bookinformation.append(bookinformation_mediator)
bookinformation_number += 1
#bookinformation_number 在后面的添加有误后，删除的时候用到
print('''添加成功！
书名是：%s
作者是：%s
题材是：%s
备注是：%s
添加日期是：%s'''%(name,author,genre,marker,date))
keyboard.wait('enter',True,True)
#这里的wait()是为了抵消上一个input()输入完成后按的回车键，不然会连着执行下面的 is_pressed('enter')的命令
print('如添加的信息有误，请按Esc键，确认添加请按Enter键')
#用 While True 死循环监测键盘输入
while True:
if keyboard.is_pressed('esc'):
del bookinformation[bookinformation_number-1]
print('此书信息已删除，请重新添加')
bookinformation_number -= 1
#删除之后要记得值减一
keyboard.wait('esc',True,True)
#wait()同理
break
elif keyboard.is_pressed('enter'):
buffer = input('')
keyboard.wait('enter',True,True)
break
else:
continue
print('继续添加请按Enter键，退出请按Esc键')
while True:
if keyboard.is_pressed('enter'):
buffer = input('')
break
elif keyboard.is_pressed('esc'):
Bookmanager.save(self)
bookinformation = []
bookinformation_number = 0
#退出前面要记得初始化两个变量
return
else:
continue
def searchbooks(self):
global bookinformation
while True:
#初始化变量以防上次循环的变量也被拉进来
bookinformation = []
search_number = 0
information_mediator = []
one_information_item = ''
file = open('Bookinformation.txt', 'r')
#因为只是搜素书籍信息，所以不需要改动txt文件，用 r 方式打开就好
book_list = file.readlines()
# readlines()函数可以一行一行地读，并返回列表
for i in book_list:
for each_character in i:
if each_character == '\t' or each_character == '\n':
#保存的时候是用了Tab键来分隔不同的信息，用换行符来区分不同的书籍
if one_information_item != '' and one_information_item != '\n':
#防止将空字符串添加进列表
information_mediator.append(one_information_item)
one_information_item = ''
#添加完后需要初始化变量
else:
one_information_item += each_character
bookinformation.append(information_mediator)
information_mediator = []
keywords = input('请输入需要查找的书名或者关键字\n')
#这里搜索功能只能搜索到完全一样的关键字，编程能力不行，真希望可以像百度、谷歌那样
for book in bookinformation:
for i in book:
if i == keywords:
search_number += 1
print('''第%s本符合结果的书：
书名：%s
作者：%s
类型：%s
添加日期：%s
备注：%s
可用性：%s'''%(str(search_number),book[0],book[1],book[2],book[3],book[4],book[5]))
break
if search_number == 0:
print("找遍了也找不到这本书")
print('是否继续查找，继续请按Enter键，退出查找请按Esc键')
keyboard.wait('enter',True,True)
while True:
if keyboard.is_pressed('enter'):
break
elif keyboard.is_pressed('esc'):
bookinformation = []
return
else:
continue
buffer = input('')
keyboard.wait('enter',True,True)
def editbooks(self):
global bookinformation
while True:
locate_number_list = []
search_number = 0
bookinformation = Bookmanager.get_bookinformation(self)
keywords = input('请输入需要修改的书的关键字')
keyboard.wait('enter',True,True)
for book in bookinformation:
for i in book:
if i == keywords:
search_number += 1
locate_number_list.append(book[6])
print('''第%s本符合结果的书：
书名：%s
作者：%s
类型：%s
添加日期：%s
备注：%s
可用性：%s'''%(str(search_number),book[0],book[1],book[2],book[3],book[4],book[5]))
if search_number == 0:
print('没有找到这本书，请按Enter重新搜索。或者按Esc键退出')
while True:
if keyboard.is_pressed('esc'):
keyboard.wait('esc',True,True)
return
elif keyboard.is_pressed('enter'):
keyboard.wait('enter',True,True)
break
else:
continue
continue
book_number = Bookmanager.if_integer_is_valid(self)
try:
locate_book_number = locate_number_list[int(book_number)-1]
book_mediator = bookinformation[int(locate_book_number)]
availability = book_mediator[5]
print('''确定要修改这本书吗？确定请按Enter键，取消请按Esc键。
书名：%s
作者：%s
类型：%s
添加日期：%s
备注：%s
可用性：%s'''%(book_mediator[0],book_mediator[1],book_mediator[2],book_mediator[3],book_mediator[4],book_mediator[5]))
while True:
if keyboard.is_pressed('enter'):
print('请重新输入信息：')
buffer = input('')
name = input('请输入书名：')
author = input('请输入作者：')
genre = input('请输入所属类型：')
marker = input('请输入备注：')
date = time.strftime("%Y-%m-%d",time.localtime())
keyboard.wait('enter',True,True)
book_mediator = []
book_mediator.append(name)
book_mediator.append(author)
book_mediator.append(genre)
book_mediator.append(date)
book_mediator.append(marker)
book_mediator.append(availability)
book_mediator.append(str(locate_book_number))
del bookinformation[int(locate_book_number)]
bookinformation.insert(int(locate_book_number),book_mediator)
print('''修改完毕：
新书名：%s
新作者：%s
新类型：%s
新添加/修改日期：%s
新备注：%s
可用性：%s'''%(bookinformation[int(locate_book_number)][0],bookinformation[int(locate_book_number)][1],bookinformation[int(locate_book_number)][2],bookinformation[int(locate_book_number)][3],bookinformation[int(locate_book_number)][4],bookinformation[int(locate_book_number)][5]))
#修改完毕后就立即保存文件，可以避免一些Bugs
file = open('Bookinformation.txt','w+')
for book in bookinformation:
for i in book[:6]:
file.write(i)
file.write('\t')
file.write('\n')
file.close()
boobookinformation = []
break
elif keyboard.is_pressed('esc'):
keyboard.wait('esc',True,True)
bookinformation = []
break
else:
continue
except:
print('出错了！请输入正确的数字')
print('继续修改请按Enter键，返回到主菜单请按Esc键')
while True:
if keyboard.is_pressed('enter'):
buffer = input('')
break
elif keyboard.is_pressed('esc'):
return
else:
continue
def deletebooks(self):
global bookinformation
while True:
locate_number_list = []
search_number = 0
bookinformation = Bookmanager.get_bookinformation(self)
keywords = input('请输入需要删除的书的关键字')
keyboard.wait('enter',True,True)
for book in bookinformation:
for i in book:
if i == keywords:
search_number += 1
locate_number_list.append(book[6])
print('''第%s本符合结果的书：
书名：%s
作者：%s
类型：%s
添加日期：%s
备注：%s
可用性：%s'''%(str(search_number),book[0],book[1],book[2],book[3],book[4],book[5]))
if search_number == 0:
print('没有找到这本书，请按Enter重新搜索。或者按Esc键退出')
while True:
if keyboard.is_pressed('esc'):
keyboard.wait('esc',True,True)
return
elif keyboard.is_pressed('enter'):
keyboard.wait('enter',True,True)
break
else:
continue
continue
book_number = Bookmanager.if_integer_is_valid(self)
try:
book = bookinformation[int(locate_number_list[int(book_number)-1])]
print('''确定要删除这本书吗？确定请按Enter键，取消请按Esc键
书名：%s
作者：%s
类型：%s
添加日期：%s
备注：%s
可用性：%s'''%(book[0],book[1],book[2],book[3],book[4],book[5]))
while True:
if keyboard.is_pressed('enter'):
del bookinformation[int(locate_number_list[int(book_number)-1])]
file = open('Bookinformation.txt','w+')
for book in bookinformation:
for i in book[:6]:
file.write(i)
file.write('\t')
file.write('\n')
file.close()
#删除后就立即保存
print('已成功删除！')
keyboard.wait('enter',True,True)
break
elif keyboard.is_pressed('esc'):
keyboard.wait('esc',True,True)
break
else:
continue
except:
print('请输入正确的数字！')
print('继续删除请按Enter键，返回主菜单请按Esc键')
while True:
if keyboard.is_pressed('enter'):
keyboard.wait('enter',True,True)
break
elif keyboard.is_pressed('esc'):
return
else:
continue
def borrow_return_books(self):
global bookinformation
while True:
#循环运行每一次都要在开头初始化变量，以防对本次运行造成影响
bookinformation = Bookmanager.get_bookinformation(self)
search_number = 0
locate_number_list = []
keywords = input('请输入需要借阅/归还的书的关键字')
keyboard.wait('enter',True,True)
for book in bookinformation:
for i in book:
if i == keywords:
search_number += 1
locate_number_list.append(book[6])
print('''符合条件的第%s本书：
书名：%s
作者：%s
类型：%s
添加日期：%s
备注：%s
可用性：%s'''%(str(search_number),book[0],book[1],book[2],book[3],book[4],book[5]))
break
if search_number == 0:
print('找遍了也没找到！请按Enter键重新搜素，或者按Esc返回主菜单')
while True:
if keyboard.is_pressed('enter'):
keyboard.wait('enter',True,True)
break
elif keyboard.is_pressed('esc'):
return
else:
continue
else:
book_number = Bookmanager.if_integer_is_valid(self)
try:
book = bookinformation[int(locate_number_list[int(book_number)-1])]
print('借阅此书请按Enter键，归还请按Esc键')
while True:
if keyboard.is_pressed('enter'):
keyboard.wait('enter',True,True)
#用条件句解决借阅归还时可能会出现的bugs
if book[5] == '可借阅':
print('借阅成功！')
del bookinformation[int(locate_number_list[int(book_number)-1])][5]
bookinformation[int(locate_number_list[int(book_number)-1])].insert(5,'已借出')
#同样借出去后需要修改可用性为已借出，并写在文件里
file = open('Bookinformation.txt','w')
for book in bookinformation:
for i in book[:6]:
file.write(i)
file.write('\t')
file.write('\n')
file.close()
break
else:
print('此书已被借走，无法借阅')
break
elif keyboard.is_pressed('esc'):
keyboard.wait('esc',True,True)
if book[5] == '已借出':
print('归还成功！')
del bookinformation[int(locate_number_list[int(book_number)-1])][5]
bookinformation[int(locate_number_list[int(book_number)-1])].insert(5,'可借阅')
file = open('Bookinformation.txt','w')
for book in bookinformation:
for i in book[:6]:
file.write(i)
file.write('\t')
file.write('\n')
file.close()
break
else:
print('此书还在库中，无需归还')
break
else:
continue
except:
print('请输入正确的数字！')
print('重新搜素请按Enter键，返回主菜单请按Esc键')
while True:
if keyboard.is_pressed('enter'):
keyboard.wait('enter',True,True)
break
elif keyboard.is_pressed('esc'):
return
else:
continue
def showallbooks(self):
global bookinformation
bookinformation = []
search_number = 0
bookinformation = Bookmanager.get_bookinformation(self)
print('\n以下是在数据库里的全部书籍：\n')
for book in bookinformation:
search_number += 1
print('''第%s本书：
书名：%s
作者：%s
类型：%s
添加日期：%s
备注：%s
可用性：%s \n'''%(str(search_number),book[0],book[1],book[2],book[3],book[4],book[5]))
return
#写了一个函数用来执行经常用到的功能，就不用一遍一遍地重复写相同的代码了
def get_bookinformation(self):
global bookinformation
bookinformation = []
search_number = 0
locate_number = 0
information_mediator = []
one_information_item = ''
file = open('Bookinformation.txt', 'r')
book_list = file.readlines()
file.close()
for i in book_list:
for each_character in i:
if each_character == '\t':
if one_information_item != '' and one_information_item != '\n':
information_mediator.append(one_information_item)
one_information_item = ''
elif each_character == '\n':
one_information_item = ''
information_mediator.append(str(locate_number))
#这里会将每一行的行号写入列表中，后面会用得到
locate_number += 1
break
else:
one_information_item += each_character
bookinformation.append(information_mediator)
information_mediator = []
#程序只需要bookinformation这个数组就行，其他的变量作为局部变量就可以
return bookinformation
#这个函数用来判断输入的序号合不合法
def if_integer_is_valid(self):
book_number = input('请问需要对第几本书进行操作？输入数字即可')
while not str.isdigit(book_number):
print('请确保输入的是整数序号')
book_number = input('请问需要对第几本书进行操作？输入数字即可')
while int(book_number) != float(book_number):
print('请确保输入的是整数序号')
book_number = input('请问需要对第几本书进行操作？输入数字即可')
keyboard.wait('enter',True,True)
return book_number
main = Menu()
main.showmenu()
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狗仔卡
发表于 2021-5-11 16:15:17
置顶卡
千斤顶
显身卡
发表于 2021-5-12 06:08:43
楼主