通过读取文件简单的实现用户的注册、登陆、锁定

1、流程图：

2、代码：

import getpass

#用户注册
logon = input("Please of logon.....Y/N:")
if logon == "y":
    logonName = input("please you name:")
    logonPassword = getpass.getpass()
    username = "UPLoading.txt"
    with open(username,"a") as logonlife:
        logonlife.write("\n")
        logonlife.write(logonName)
        logonlife.write(" ")
        logonlife.write(logonPassword)

#注册结束后是否登陆
landing = input("Please of landing.....Y/N:")
if landing == "n":
    exit()


#实现读取锁定文件
lockfile = "Lock.txt"
with open(lockfile) as lfile:
    user = []
    for user1 in lfile.readlines():
        userLine = user1.strip().split()
        user.append(userLine)

#实现读取登陆文件
filename = "UPLoading.txt"
with open(filename) as file:
    dataMat = []
    for line in file.readlines():
        curLine=line.strip().split(" ")
        dataMat.append(curLine[0:2])

count = 1
info = False
while count < 4:
    Username = input("Username:")
    Password = input("Password:")
#判断是否被锁定
    for j in range(0, len(user)):
        if Username == user[j][0]:
            print("Please get out!!!", user[j][0])
            break
        info = False
    else:
#判断是否输入正确
        for i in range(0, len(dataMat)):
            if Username == dataMat[i][0] and Password == dataMat[i][1]:
                print("Welcome", dataMat[i][0], "!!!")
                break
            info = False
        else:
            info = True
    if info == False:
        break
    else:
        count += 1

else:
#实现当三次都输入错误后将用户名锁定到Lock.txt文件
    lockfile = "Lock.txt"
    with open(lockfile,"a") as Lfile:
        Lfile.write("\n")
        Lfile.write(Username)