auto save

diy2.py

+    i=3
+    userpassword = "python"
+    userpassword = "123456"
+    while True:
+         if 1>0：
+            name = input("请输入用户名:")
+            password = input("请输入密码:")
+            i-=1
+            if name == username and password == userpassword:
+                print("登录成功!")
+                break
+            if password!=userpassword:
+                print("密码错误")                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
+                continue
+            if name != userpassword:
+                print("账号错误")        
+        else:
+            print("索")
+            exit()
+
+        
+        
+    
\ No newline at end of file