期末老师布置的大作业，没地方存，丢这吧

只实现了部分功能

用navicat创数据库

数据库里有三个表，books(bno,bname,author),borrow(bno,rno,appointment,prestamo_time,fee),reader(rno,password,rname,estado)

还有个名为fee的视图，定义为

select `borrow`.`rno` AS `rno`,`borrow`.`fee` AS `fee` from `borrow`

# -*- coding: utf-8 -*-
"""
Created on Fri Dec 16 22:07:10 2022@author: errormaker
"""import datetimeimport pymysqldef connecting(userr:str='publicuser',passwordd='123456'): #配合Navicat for mysql使用conn=pymysql.connect(host='localhost',user=userr,password=passwordd,port=3306,charset='utf8',db='estar')if conn:print("连接成功")return connadministrator=['root','root1','root2']#三个管理员       def lookall(table:str):sql=conn.cursor()sql.execute("select * from %s" %(table))conn.commit() result=sql.fetchall()print("当前表内数据为：",end='\n')for i in result:print(i)def addoperate(): #管理员对所有表添加数据------------------------------------------while True:print("\n你想在哪个表增加数据？1：books；2：reader；3：borrow；0：退出")a=(input("请输入1或2或3或0："))if a=='1':sql=conn.cursor()print("按照“图书编号”“图书名称”“作者”顺序来输入数据：")bno=input("图书编号:")bname=input("图书名称:")author=input("作者:")# print("INSERT INTO %s VALUES(%s,%s,%s)" %('books',repr(bno),repr(bname),repr(author)) )sql.execute("INSERT INTO %s VALUES(%s,%s,%s)" %('books',repr(bno),repr(bname),repr(author)) )conn.commit()sql=conn.cursor()sql.execute("select * from %s" %('books'))conn.commit() result=sql.fetchall()print("插入数据后的表为：",end='\n')for i in result:print(i)elif a=='2':sql=conn.cursor()print("按照“读者编号”“读者密码”“读者名称”“estado”顺序来输入数据：")rno=input("读者编号:")password=input("读者密码:")rname=input("读者名称:")estado=input("estado:")# print("INSERT INTO %s VALUES(%s,%s,%s)" %('books',repr(bno),repr(bname),repr(author)) )sql.execute("INSERT INTO %s VALUES(%s,%s,%s,%s)" %('reader',repr(rno),repr(password),repr(rname),repr(estado)) )conn.commit()    sql=conn.cursor()sql.execute("select * from %s" %('reader'))conn.commit() result=sql.fetchall()print("插入数据后的表为：",end='\n')for i in result:print(i)elif a=='3':sql=conn.cursor()print("按照“图书编号”“读者编号”“读者名称”“appointment”“prestamo_time”“fee”顺序来输入数据：")bno=input("图书编号:")rno=input("读者编号:")appointment=input("appointment:")prestamo_time=input("prestamo_time:")fee=input("fee:")sql.execute("INSERT INTO %s VALUES(%s,%s,%s,%s,%s)" %('borrow',repr(bno),repr(rno),repr(appointment),repr(prestamo_time),repr(fee)) )conn.commit()    sql=conn.cursor()sql.execute("select * from %s" %('borrow'))conn.commit() result=sql.fetchall()print("插入数据后的表为：",end='\n')for i in result:print(i)elif a=='0':print("退出成功！")breakelse:print("请输入正确数字：")continue#------------------------------------------------------------------------------
def deleteoperate():#管理员对所有表删除数据while True:print("\n你想在哪个表删除数据？1：books；2：reader；3：borrow；0：退出")a=(input("请输入1或2或3或0："))if a=='0':print("退出成功！")breakelif a=='1':lookall('books')bno=input("输入你要删除数据的书的编号：")sql=conn.cursor()sql.execute("DELETE FROM %s where bno=%s" %('books',repr(bno)))lookall('books')elif a=='2':lookall('reader')rno=input("输入你要删除数据的读者的编号：")sql=conn.cursor()sql.execute("DELETE FROM %s where rno=%s" %('reader',repr(rno)))lookall('reader')elif a=='3':lookall('borrow')bno=input("输入你要删除数据的书的编号：")rno=input("输入你要删除数据的读者的编号：") sql=conn.cursor()sql.execute("DELETE FROM %s where rno=%s and bno=%s" %('borrow',repr(rno),repr(bno)))lookall('borrow')else:print("请输入正确数字：")continue
#------------------------------------------------------------------------------def updataoperate():#管理员对所有表修改数据while True:print("\n你想在哪个表修改数据？1：books；2：reader；3：borrow；0：退出")a=(input("请输入1或2或3或0："))if a=='0':print("退出成功！")breakelif a=='1':lookall('books')while True:b=(input("你想修改哪个属性？1：图书编号；2：图书名称；3：作者（输入数字）；0：返回；（输入数字）："))if b=='1':before=input("输入原来的图书的编号：")                after=input("你想修改为：")sql=conn.cursor()sql.execute("update %s set bno=%s where bno=%s" %('books',repr(after),repr(before)))conn.commit() lookall('books')elif b=='2':bno=input("输入你想修改的那一行的图书编号：")   before=input("输入原来的图书的名称：")                after=input("你想修改为：")sql=conn.cursor()sql.execute("update %s set bname=%s where bname=%s and bno=%s" %('books',repr(after),repr(before),repr(bno)))conn.commit() lookall('books')elif b=='3':bno=input("输入你想修改的那一行的图书编号：")  before=input("输入你想修改的图书的作者：")                after=input("你想修改为：")sql=conn.cursor()sql.execute("update %s set author=%s where author=%s and bno=%s" %('books',repr(after),repr(before),repr(bno)))conn.commit() lookall('books')elif b=='0':print("返回")breakelse:print("请输入正确数字：")continueelif a=='2':lookall('reader')while True:b=(input("你想修改哪个属性？1：读者编号；2：密码；3：读者姓名；4：estado；0：返回；（输入数字）："))if b=='1':before=input("输入原来的读者编号：")                after=input("你想修改为：")sql=conn.cursor()sql.execute("update %s set rno=%s where rno=%s" %('reader',repr(after),repr(before)))conn.commit() lookall('reader')elif b=='2':rno=input("输入你想修改的那一行的读者编号：")   before=input("输入原来的的密码：")                after=input("你想修改为：")sql=conn.cursor()sql.execute("update %s set password=%s where password=%s and rno=%s" %('reader',repr(after),repr(before),repr(rno)))conn.commit() lookall('reader')elif b=='3':rno=input("输入你想修改的那一行的读者编号：")   before=input("输入原来的读者姓名：")                after=input("你想修改为：")sql=conn.cursor()sql.execute("update %s set rname=%s where rname=%s and rno=%s" %('reader',repr(after),repr(before),repr(rno)))conn.commit() lookall('reader')elif b=='4':rno=input("输入你想修改的那一行的读者编号：")   before=input("输入原来的estado：")                after=input("你想修改为：")sql=conn.cursor()sql.execute("update %s set estado=%s where estado=%s and rno=%s" %('reader',repr(after),repr(before),repr(rno)))conn.commit() lookall('reader')elif b=='0':print("返回")breakelse:print("请输入正确数字：")continueelif a=='3':lookall('borrow')while True:b=(input("你想修改哪个属性？1：图书编号；2：读者编号；3：appointment；4：prestamo_time；5：fee；0：返回；（输入数字）："))if b=='1':before=input("输入原来的图书编号：")       rno=input("输入你想修改的那一行的读者编号：")after=input("你想修改为：")sql=conn.cursor()sql.execute("update %s set bno=%s where bno=%s and rno=%s" %('borrow',repr(after),repr(before),repr(rno)))conn.commit() lookall('borrow')elif b=='2':before=input("输入原来的读者编号：")  bno=input("输入你想修改的那一行的图书编号：")    after=input("你想修改为：")sql=conn.cursor()sql.execute("update %s set rno=%s where rno=%s and bno=%s" %('borrow',repr(after),repr(before),repr(bno)))conn.commit() lookall('borrow')elif b=='3':bno=input("输入你想修改的那一行的图书编号：")  rno=input("输入你想修改的那一行的读者编号：")before=input("输入原来的appointment：")                after=input("你想修改为：")sql=conn.cursor()sql.execute("update %s set appointment=%s where appointment=%s and rno=%s and bno=%s" %('borrow',repr(after),repr(before),repr(rno),repr(bno)))conn.commit() lookall('borrow')elif b=='4':bno=input("输入你想修改的那一行的图书编号：")  rno=input("输入你想修改的那一行的读者编号：")before=input("输入原来的prestamo_time：")                after=input("你想修改为：")sql=conn.cursor()sql.execute("update %s set prestamo_time=%s where prestamo_time=%s and rno=%s and bno=%s" %('borrow',repr(after),repr(before),repr(rno),repr(bno)))conn.commit() lookall('borrow')elif b=='5':bno=input("输入你想修改的那一行的图书编号：")  rno=input("输入你想修改的那一行的读者编号：")before=input("输入原来的fee：")                after=input("你想修改为：")sql=conn.cursor()sql.execute("update %s set fee=%s where fee=%s and rno=%s and bno=%s" %('borrow',repr(after),repr(before),repr(rno),repr(bno)))conn.commit() lookall('borrow')elif b=='0':print("返回")breakelse:print("请输入正确数字：")continue
#------------------------------------------------------------------------------def selectoperate():while True:print("\n你想查哪个表的数据？1：books；2：reader；3：borrow；0：退出")a=(input("请输入1或2或3或0："))if a=='1':lookall('books')elif a=='2':lookall('reader')elif a=='3':lookall('borrow')elif a=='0':print("退出成功！")breakelse:print("请输入正确数字：")continue
#------------------------------------------------------------------------------def adminstration():while True:print("你想要做什么？\n 1：增加数据；\n 2：删除数据；\n 3：修改数据；\n 4：查询数据；0：退出管理员系统：")a=(input("请输入1或2或3或4或0："))if a=='1':addoperate()elif a=='2':deleteoperate()elif a=='3':updataoperate()elif a=='4':selectoperate()elif a=='0':print("退出管理员系统成功！")breakelse:print("请输入正确数字：")continue
#------------------------------------------------------------------------------      def addreader(rno,password,rname,estado=0): #publicuser添加读者------------------------------------------a='2'if a=='2':sql=conn.cursor()# print("INSERT INTO %s VALUES(%s,%s,%s)" %('books',repr(bno),repr(bname),repr(author)) )sql.execute("INSERT INTO %s VALUES(%s,%s,%s,%s)" %('reader',repr(rno),repr(password),repr(rname),repr(estado)) )conn.commit()    sql=conn.cursor()sql.execute("select * from %s where rno=%s" %('reader',repr(rno)))conn.commit() result=sql.fetchall()print("注册成功；你的信息为：",end='\n')for i in result:print(i)#selectoperate()
#addoperate()
#deleteoperate()
#updataoperate()
conn=connecting() #------连接public用户
print("欢迎进入网上图书馆系统请按要求操作：")
print("提示：你未登录，只能查书")
userr='publicuser'#userr记录当前用户是谁，辨别用户
while True:print("请按要求操作：")print('您好%s' %(userr))a=input("1:查书（借阅）（预约）；\n2：登录（切换账号）；\n3：注册；\n4：修改密码；\n5：查询借阅记录；\n6：管理（数据库管理员专用）；\n0：退出系统：\n 请输入1或2或3或4或5或6或0：")if a=='1':cursor=conn.cursor()while  True:b=(input("请输入您要查询的书籍：（支持单字或全称）\n输入0退出查询："))cursor.execute('select * from books where bname like %s;' %(repr("%"+b+"%")))result=cursor.fetchall()if result:print('查询到的结果：\n')for i in result:print(i)while True:whatwant=input("1：借阅；\n3:返回：请输入1或3：")if whatwant=='1':while True:if_borrow=input("你是否真想借阅这本书？\n 1：借阅；2：不借阅：\n 请输入1或2：")if if_borrow=='1':if userr!='publicuser':cursor.execute('select bno from books where bname like %s;' %(repr("%"+b+"%")))result1=cursor.fetchall()#result1是查询到的图书结果bnoresult1=result1[0][0]cursor.execute('SELECT prestamo_time FROM borrow WHERE bno=%s ' %(repr(result1)))result2=cursor.fetchall()#result2是看这本书有没有被借阅#print(result2)if result2==() or result2=='0':#如果结果是空的，也代表没借result2=()#写这个if的目的是防止返回空值，result2[0]超限报错##-----####时间##时间#时间else:result2=result2[0][0]#得到prestamo-time#print(result2)if result1 and (result2==()):#result==‘0’#代表该书能被查到，并且没有被借阅addhours=datetime.datetime.now()+datetime.timedelta(days=14) time=addhours.strftime('%Y-%m-%d')cursor.execute('insert into borrow VALUES (%s,%s,"0",%s,"0")' %(repr(result1),repr(userr),repr(time)))conn.commit()#注意当前用户有没有对borrow的插入权限，不然插入操作无效print("您已经借阅成功,您只能借阅14天，超时未还将无法登录")cursor.close()breakelif result1 and result2:#一个账号只能借阅一本书print("您无法借阅因为正在被别人借阅，系统已经自动帮您预约")cursor.execute('insert into borrow VALUES (%s,%s,"1","0","0")' %(repr(result1),repr(userr)))conn.commit()cursor.close()breakelse:print("\n您还未登陆，请先登录")breakelse:print("请输入正确数字！")continueelif whatwant=='3':print("返回")breakelse:print("请输入正确数字！")continuebreak   breakelif b=='0':print('\n退出查询成功：')breakelse:print("未找到此书籍，请重新输入或输入0退出查询：")continuecursor.close()elif a=='2':#登录userrr=input("请输入用户名(账号)：")if userrr not in administrator:dl=conn.cursor()dl.execute("select rno from reader")r=dl.fetchall()namee=[]for j in range(0,len(r)):namee+=r[j]if userrr in namee:number=0while True:passwordd=input("请输入密码：")dl=conn.cursor()dl.execute("select * from reader where rno=%s and password=%s" %(repr(userrr),repr(passwordd)))if (dl.fetchall()):conn=(connecting(userrr,passwordd))cursor=conn.cursor()cursor.execute('SELECT fee FROM fee WHERE rno=%s' %(repr(userrr)) )#查询是否欠费，若欠费无法借阅书籍fee=cursor.fetchall()if fee!=():fe=fee[0][0] if fe=='1':print('查询到您有一本书过期未还，你可以选择续借或归还图书后联系管理员恢复')while True:xujie=input("是否续借？\n1：是；\n2：否：\n输入数字：")if xujie=='2':breakelif xujie=='1':addhours=datetime.datetime.now()+datetime.timedelta(days=14) time=addhours.strftime('%Y-%m-%d')curso=conn.cursor()curso.execute('update borrow set prestamo_time=%s where rno=%s ' %(repr(time),repr(userrr)))conn.commit() curso.execute('update borrow set fee="0" where rno=%s ' %(repr(userrr)))conn.commit() print("续借成功")curso.close()breakbreakelse:print("用户可借阅")else:print("用户可借阅")userr=userrrprint("欢迎%s" %(userr))breakelse:print("密码错误，已错误次数：")print(number)number+=1if number<=3:    continueelse:print("累积错误三次，请重试！")breakelse:print("无该用户，请检查用户名或返回注册！")elif userrr in administrator:number=0while True:passwordd=input("请输入密码：")if passwordd=='123456':conn=(connecting(userrr,passwordd))userr=userrrprint("欢迎%s" %(userr))breakelse:print("密码错误，已错误次数：")print(number)number+=1if number<=3:    continueelse:print("累积错误三次，若遗忘密码可联系管理员重置！")break# dl=conn.cursor()# dl.execute("select * from reader where rno=%s and password=%s" %(repr(userrr),repr(passwordd)))# if (dl.fetchall()):#     conn=(connecting(userrr,passwordd))#     userr=userrr#     print("欢迎%s" %(userr))#     break# else:#     print("密码错误，已错误次数：")#     print(number)#     number+=1#     if number<=3:    #         continue#     else:#         print("累积错误三次，请重试！")# print(name)elif a=='3':print("注册系统：")if userr == 'publicuser' or userr == 'root':while True:userr_temp=input("请输入用户名(账号)；输入0退出注册：")zhuce=conn.cursor()zhuce.execute("select rno from reader")r=zhuce.fetchall()name=[]for j in range(0,len(r)):name+=r[j]# print(name)if userr_temp=='0':print('\n退出成功：')breakelif userr_temp in name:print("提示：已经有用户占用了此名字")continueelse:userr=userr_tempwhile True:passwordd1=input("请输入密码：")passwordd2=input("请再次输入密码：")if passwordd1==passwordd2:passwordd=passwordd2breakelse:print("两次密码不一致！")continue#注册zhuce=conn.cursor()#赋权zhuce.execute("CREATE USER %s@'localhost' IDENTIFIED BY %s" %(repr(userr),repr(passwordd)))zhuce.execute("GRANT INSERT, UPDATE,SELECT ON `estar`.`borrow` TO %s@'localhost'" %(repr(userr)))zhuce.execute("GRANT SELECT ON `estar`.`books` TO %s@'localhost'" %(repr(userr)))zhuce.execute("GRANT SELECT ON `estar`.`reader` TO %s@'localhost'" %(repr(userr)))zhuce.execute("GRANT SELECT ON `estar`.`fee` TO %s@'localhost'" %(repr(userr)))zhuce.execute("GRANT UPDATE ON `estar`.`reader` TO %s@'localhost'" %(repr(userr)))rname=input("输入读者昵称:")addreader(userr,passwordd,rname)breakelse:print("请退出当前用户后再注册")elif a=='4':#改密码if userr=='publicuser':print("\n请先登录账号")else:while True:pre_password=input("请输入之前的密码,输入000放弃修改：")if pre_password!='000':xgmm=conn.cursor()xgmm.execute("select * from reader where rno=%s and password=%s" %(repr(userr),repr(pre_password)))if (xgmm.fetchall()):while True:passwordd1=input("请输入修改后的密码：")passwordd2=input("请再次输入修改后的密码：")if passwordd1==passwordd2:later_passwordd=passwordd2breakelse:print("两次密码不一致！")continue#在表里修改密码before=pre_password           after=later_passworddsql=conn.cursor()sql.execute("update %s set password=%s where password=%s and rno=%s" %('reader',repr(after),repr(before),repr(userr)))#在服务器修改密码mm=conn.cursor()mm.execute("set password for %s@localhost = password(%s)" %(repr(userr),repr(later_passwordd)))conn.commit() print("成功修改%s的密码" %(userr))break#else语句：密码不匹配则提示改不了，输入0放弃修改else:print("密码错误！")else:print("返回成功！")breakelif a=='5':the_user=userrif the_user=='publicuser':print("请登录账号")else:print("你的借阅记录为：")find=conn.cursor()find.execute("SELECT bname FROM books WHERE bno in (SELECT bno FROM borrow WHERE rno=%s)" %(repr(the_user)))out=find.fetchall()print(out)elif a=='6':if userr in administrator:print('\n管理员%s，欢迎进入管理系统：' %(userr))adminstration()else:print('你不是管理员,当前用户是%s' %(userr))continueelif a=='0':print("退出成功！")breakelse:print("请输入正确数字：")continue#lookall('books')
# =============================================================================
#
# def findBno(selectwhat:list,fromwhat:str):  #查找(无where语句)
#     if not(selectwhat):#没有就默认查所有
#         selectwhat='*'
#     if not(fromwhat):#没有就默认为图书表
#         fromwhat='books'
#     cursor = conn.cursor()
#     cursor.execute("select %s from %s" %(selectwhat,','.join(str(i) for i in fromwhat)))
#     result=cursor.fetchall()
#     if result:
#         print(result)
#     else:
#         print("\n         not found")
# a=''
# b=['books','reader','borrow']
# c=''
# findBno(a,b)
#
# def findBno1(selectwhat:str,fromwhat:str,wherewhat:str()):  #查找（有where语句）
#     if not(selectwhat):
#         selectwhat='*'
#     if not(fromwhat):
#         fromwhat='books'
#     cursor = conn.cursor()
#     cursor.execute("select %s from %s where %s" %(selectwhat,fromwhat,wherewhat))
#     result=cursor.fetchall()
#     if result:
#         print(result)
#     else:
#         print("\n         not found")
#
# =============================================================================