python实现简易的图书管理系统
- 一、设计需求
- 二、实现代码
- 1.用excel存储
- 2.用txt文件方式存储
一、设计需求
1.添加书籍
2.查询数据
3.借书
存储方式 ，用excel保存到硬盘上或者用.txt文件保存
二、实现代码
1.用excel存储
# 一、介绍
# 主要功能实现
# 1、借书
# 2、添加新书
# 3、查找图书
# 数据存储：excel表
import xlwt
import xlrd
import xlutils.copy
import os
#book = {"位置":"","书名":"","价格":"","作者":""}
#存储方式 用excel
title =["位置","书名","价格","作者"]
#查看当前的书本数，也就行号
def read_book_num():
path = os.path.join(os.getcwd()+r'\图书.xls')
print(path)
flag = os.path.exists(path)
if(flag):
book_excel = xlrd.open_workbook("图书.xls")
sheet1 = book_excel.sheets()[0]
book_num = sheet1.nrows
else:
book_num = 0
return book_num
def add_book(book_num):
#判断excel是否存在,如果不存在，就创建
path = os.path.join(os.getcwd()+r'\图书.xls')
flag = os.path.exists(path)
print("flag",flag)
if(flag):
#如果存在，就打开excel
book_excel = xlrd.open_workbook("图书.xls")
#并复制之前的已经存在的数据
book_excel = xlutils.copy.copy(book_excel)
sheet1 = book_excel.get_sheet(0)
#sheet1 = book_excel.sheets()[0]
else:
book_excel = xlwt.Workbook("图书.xls") #新建excel
sheet1 = book_excel.add_sheet(sheetname="图书表单",cell_overwrite_ok=True)
while(1):
#打印提示
button_num = input("请选择你的操作\n:"+"1.添加新书\n"+"2.退出请按q\n")
if(button_num == 'q'):
break
elif (button_num == "1"):
#输入一本书的所有信息，并且先存储到book里面
book = [] #清空书本信息
input_value = '' #清空输入
for i in range(4):
print("请输入:",title[i])
input_value = input()
book.append(input_value)
#存储到硬盘（将输入的数据存储到excel中）
for i in range(4):
#写入第book_num行数据
sheet1.write(book_num,i,book[i])
book_num = book_num +1 #总书数量加1
book_excel.save("图书.xls")
print("添加成功")
else:
print("输入无效，请重新输入！")
def search_book():
#打开excel
book_excel = xlrd.open_workbook("图书.xls")
sheet1 = book_excel.sheets()[0]
book_num = sheet1.nrows
while(1):
#输入书名
chose= input("请输入你的操作：\n"+"1.查询书籍:\n"+"2.退出请按q\n")
if(chose == 'q'):
break
elif (chose == '1'):
bookname = input("请输入书名:")
for i in range(0,book_num):
if(bookname == sheet1.cell(i,0).value):
print("查询成功，查询结果为\n",sheet1.row_values(i))
return
else:
print("查询失败,本书库没有此书")
return
else:
print("操作有误，请重新输入！")
def borrow_book():
#打开excel
book_excel = xlrd.open_workbook("图书.xls")
sheet1 = book_excel.sheets()[0]
book_num = sheet1.nrows
book_excel_copy = xlutils.copy.copy(book_excel)
sheet1_copy = book_excel_copy.get_sheet(0)
#重新创建一个excel，用于保存更新后的数据
# book_excel_new = xlwt.Workbook("图书.xls") #新建excel
# sheet1_new = book_excel_new.add_sheet(sheetname="1",cell_overwrite_ok=True)
while(1):
#输入书名
print("1.请输入借书书名\n2.按q退出借书界面")
bookname = input()
if(bookname == 'q'):
return
else:
#查找
a = 0
for i in range(0, book_num):
if( bookname == sheet1.cell(i, 0).value ):
for j in range(4):
a = i + 1
while(book_num-a):
sheet1_copy.write(i,j,sheet1.cell(a,j).value)#清除位置
a += 1
print("借阅成功")
book_excel_copy.save('图书.xls')
return
# else:
# a = i
# sheet1_copy.write(i,j,sheet1.cell(a,j).value)#清除位置
#book_excel_copy.save('图书.xls')
if __name__ == '__main__':
book_num = read_book_num()
print(book_num)
while(1):
print("******图书管理系统****")
print("******1.添加新书******")
print("******2.查询书籍******")
print("******3.借书*********")
print("******4.退出*********")
op = input("请输入你的操作:")
if(op == "1"):
add_book(book_num)
elif (op == "2"):
search_book()
elif (op == "3"):
borrow_book()
elif (op == "4"):
break
else:
print("输入无效，请重新输入！")2.用txt文件方式存储
def add_book():
file = open("图书管理系统.txt","a+")
print("请输入要添加的书籍信息:")
id = input("id:")
name = input("bookname:")
author = input("author:")
#table = [name,id,author]
file.write(id+" "+name+" "+author+"\r")
print("书籍添加成功!")
file.close()
def serch_book():
file = open("图书管理系统.txt","r")
name = input("请输入要查询书籍名称:")
read_data_all = []
count = len(file.readlines())
#print(count)
file.seek(0,0) #需要将文件指针移动到开头
for i in range(count):
read_data = file.readline().split()
read_data_all.append(read_data)
for read_data in read_data_all:
# print(type(read_data))
if(name==read_data[0]):
print("查询到的数据信息为:",read_data)
break
else:
print("查找失败")
file.close()
return read_data
def borrow_book():
file = open("图书管理系统.txt","r+")
#先查找书籍存不存在，如果存在就借出
count = len(file.readlines())
read_data_all= []
file.seek(0,0) #需要将文件指针移动到开头
for i in range(count):
read_data = file.readline().split()
read_data_all.append(read_data)
print(read_data_all)
file.close()
book = serch_book()
file = open("图书管理系统.txt","w")
for line in read_data_all:
if book==line:
continue
line_to_str = ' '.join(line) #将列表装换成字符串
file.write(line_to_str+"\n")
if __name__ == "__main__":
#open直接打开一个文件，如果文件不存在则创建文件
while(1):
print("******图书管理系统****")
print("******1.添加新书******")
print("******2.查询书籍******")
print("******3.借书**********")
print("******4.退出**********")
op = input("请输入你的操作:")
if(op == "1"):
add_book()
elif(op == "2"):
serch_book()
elif(op == "3"):
borrow_book()
else:
break
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