break 终止循环命令

count = 0
while count < 3:
    name = input('请输入用户名：')
    psd = input('密码：')
    if name == "chentianjia" and psd == "chen123..":
        print('欢迎光临')
        break
    else:
        print('用户或密码错误')
    count = count + 1