auto save

diy2.py

+i=3
+username = "python"
+userpassword = "123456"
+while True:
+    name = input("1:")
+    password = input("请输入密码:")
+    if name == username and password == userpassword:
+        print("登录成功!")
+        break
+    if name!=username:
+        print('账号输入错误')
+        continue
+    if name!=userpassword:
+        print('密码输入错误')
+    else:
+        print('shipao')
+print('欢迎来到编程世界')
+   
+    
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