save project

diy2.py

+i=3
 username = "python"
 username = "python"
 userpassword = "123456"
 userpassword = "123456"
 while True:
 while True:
+    i-=1
+    if i >=0:
         name = input("请输入用户名:")
         name = input("请输入用户名:")
+        if name == username:
             password = input("请输入密码:")
             password = input("请输入密码:")
-    if name == username and password == userpassword:
+            if password == userpassword:
                 print("登录成功!")
                 print("登录成功!")
-    print("用户名和密码错误!请重新输入")
+                break
+            else:
+                print("密码错误！请重新输入")
+        else:
+            print("用户名错误！请重新输入")
+    else:
+        print("你竟敢3此错误,拉出去毙了！")        
+        exit()
 print("欢迎来到贝尔编程!")
 print("欢迎来到贝尔编程!")
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