<辅助界面>
import pymysql
class admin():
def init(self, host, port, db, user, password, charset):
self.host = host
self.port = port
self.db = db
self.user = user
self.password = password
self.charset = charset
# 获取运输工具
def open_connect(self):# 找到连接对象
self.con=pymysql.connect(self.host,
port=self.port,
db=self.db,
user=self.user,
password=self.password,
charset=self.charset
)
self.cursor = self.con.cursor()
def insert_into(self):
print("请进行添加操作：")
name= input("添加的书名：")
bauthor = input("书的作者：")
bprice = int(input("书的价格："))
sql = "insert into book(bname,author,price) values('%s','%s',%s)"%(name, bauthor, bprice)
result = self.cursor.execute(sql)
if result > 0:
print('添加成功')
self.con.commit()
else:
print('操作失败')
def del_book(self):
print("请进行删除操作：")
id = int(input("要删除的书的id："))
sql="delete from book where bid = %s "%(id)
print("确认删除吗？", 1, 'true', 2, 'false')
num = input("请操作：")
if num == "1":
result = self.cursor.execute(sql)
if result > 0:
print('添加成功')
self.con.commit()
else:
print('操作失败')
def update_book(self):
print("请进行修改操作")
id = int(input("修改的书的价格："))
name = input("修改的书名：")
bauthor = input("修改的书的作者：")
bprice = int(input("修改的书的价格："))
sql = "update book set (bname,author,price)=('%s','%s',%s) where bid = %s" % (name, bauthor, bprice, id)
result = self.cursor.execute(sql)
if result > 0:
print('修改成功')
self.con.commit()
else:
print('修改失败')
def findone(self):
print("查找操作：")
name = input("要查找的书的名字：")
sql = "select * from book where bname = '%s' " % (name)
result = self.cursor.execute(sql)
if result > 0:
print(self.cursor.fetchone())
return 1
else:
print("没有符合的数据")
return 0
def findone_author(self):
print("查找操作：")
bauthor = input("要查找的作者的名字：")
sql = "select * from book where author = '%s' " % (bauthor)
result = self.cursor.execute(sql)
if result > 0:
print(self.cursor.fetchone())
return 1
else:
print("没有符合的数据")
return 0
def findAll(self):
sql = 'select * from book'
result = self.cursor.execute(sql)
if result > 0:
print('查看成功')
self.con.commit()
print(self.cursor.fetchall())
else:
print('查看失败')
def quit(self):
self.cursor.close()
self.con.close()
<主界面>
import pymysql
from help import admin
hp = admin(‘localhost’, 3306, “books”, “root”, “xxx”, “utf8”)
hp.open_connect()
conn = None
conn = pymysql.connect(
host=”localhost”,
port=3306,
db=”books”,
user=”root”,
password=”xxx”,
charset=”utf8”
)
<准备cursor>
cursor= conn.cursor()
<准备sql 语句>
number=0
while number < 3:
print(‘‘*10,”图书管理登陆界面”,’‘*10)
name = input(“输入用户名：”)
password = input(“输入密码：”)
print(“” 20, “选择登陆类型：”, 1, “管理员登陆”, 2, “用户登陆”, “” 20)
type = input(“”)
if type == “1”:
sql= “select uname from users where utype =1”
cursor.execute(sql)
nm= cursor.fetchone()
# print(nm)
sql = “select upassword from users where utype =1”
cursor.execute(sql)
pwd= cursor.fetchone()
# print(str(pwd))
if nm[0] == name and pwd[0] ==password:
print(“管理员%s登陆成功.欢迎！”%(name))
while True:
print(“选择您的操作:”,
1, “添加图书信息”,
2, “删除图书信息”,
3, “修改图书信息”,
4, “根据书名查找”,
5, “查找所有信息”,
6, “退出图书管理”
)
num = input(“请选择：”)
if num == ‘1’:
hp.insert_into()
elif num == ‘2’:
hp.del_book()
elif num == ‘3’:
pass
elif num == ‘4’:
hp.findone()
elif num == ‘5’:
hp.findAll()
elif num == ‘6’:
hp.quit()
break
else:
print(“用户名或密码错误，请重新输入：”)
number += 1
continue
elif type == “2”:
sql = "select uname from users where utype =2"
cursor.execute(sql)
nm = cursor.fetchone()
# print(nm)
sql = "select upassword from users where utype =2"
cursor.execute(sql)
pwd = cursor.fetchone()
if nm[0] == name and pwd[0] == password:
print("%s同学你好,欢迎！")
while True:
print("请操作：",
1, "根据书名查找",
2, '根据作者查找',
3, '查找所有图书',
4, "退出登陆"
)
num = input("请输入")
if num == '1':
hp.findone()
elif num == '2':
hp.findone_author()
elif num == '3':
hp.findAll()
elif num == '4':
hp.quit()
break
else:
print("用户名或密码错误，请重新输入：")
number += 1
continue
else:
print("选择有误！请瞪大眼睛0.0 再次选择！")
type = input("")
number +=1