count=0
password='nishigeshabi'
print("登陆")
user_name=input("use name:")
while count<3:
      xiashu_password = input("password:")
      if xiashu_password==password:
            print("欢迎")
            break
      else:
            print("输入错误")
      count+=1
else:
      print("锁定")




初学者请指点