7月19

# msg = "hello egon 666"# for i in msg:#     print(i)#练习2# count = 0# while True:#     if count > len(msg):#         break#     print(msg[count])#     count += 1#练习3# msg = "hello alex"# print(msg.replace("alex","sb"))#练习4# msg = "/etc/a.txt|365|get"## print(msg.split("/")[1])# print(msg.split("/")[2].split("|")[0])# print(msg.split("/")[2].split("|")[1])# print(msg.split("/")[2].split("|")[2])

#练习5# while True:#     msg = input("==>:")#     print(msg)

#练习6# while True:#     name = input("name:").strip()#     password = input("password:").strip()#     if len(name) ==0 or len(password) == 0:#         continue#     if password.isdigit():#         password = int(password)#     if name == "chen" and password == 123:#         print("正确")#         break#练习7# while True:#     msg = input("请输入内容")#     if msg.startswith("alex"):#         print(msg+"_SB")#练习8tag = Truewhile tag:    name = input("请输入姓名：").strip()    password = input("请输入密码：").strip()    salary = input("请输入工资：").strip()    work_mon = input("请输入工作年份：").strip()    if len(work_mon) ==0 or (not work_mon.isdigit()) or len(name) == 0 or len(password) ==0 or len(salary) ==0 or (not salary.isdigit()):        continue    else:        #输入成功        # salary = int(salary)        while tag:

search = input(‘‘‘                1 查询总工资                2 查询用户身份                3 退出登录            ‘‘‘)            if search.isdigit():                search = int(search)                if search == 1:                    print(salary)                elif search == 2:                    if name == "alex":                        print("super user")                    elif name == "yuahao" or name == "wupeiqi":                        print("normal user")                    else:                        print("unkown user")                    continue                elif search == 3:                    tag = False