save project

diy2.py

+i=3
 username = "tyyuiu"
 userpassword = "123456"
 while True:
+    if i>0:
         name = input("请输入用户名:")
         if  name!=username:
             print("用户名错误!请重新输入")
+            i-=1
+            print("您还有"+str(i)+"次")
             continue
         password = input("请输入密码:")
         if  password != userpassword:
             print("密码错误!请重新输入")
+            i-=1
+            print("您还有"+str(i)+"次")
             continue
         if name == username and password == userpassword:
             print("登录成功!")