练习input交互&if判断&for循环--->Python登录程序

# David James

#import getpass

_username = "David"
_password = "12345"


for i in range(3):
    username = input("用户名：")
    password = input("密码：")
    if _username == username and _password == password:
        print("欢迎用户{name}进入博彩分析系统......".format(name=username))
        break
    else:
        print("对不起您输入的用户名或密码错误！！！")
else:
    print("对不起您输入错误已超过3次！！！")

刚学习，请各位大侠指引优化提高，谢谢