auto save

diy2.py

+username = "开拓者"
+userpassword = "102934"
+i=3
+while True:
+    if i>0:
+        name = input("请输入用户名:")
+        password = input("请输入密码:")
+        if name == username and password == userpassword:
+            print("登录成功!")
+            break
+        else:
+            print("gun")
+            i-=1
+            print("你还有"+str(i)+"次登录机会")   
+    else:
+        print("好了,你不用来了")
+        exit()            
+        
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