auto save

diy2.py

+
+
+username = "python" 
+userpassword = "123456"
+
+while True:
+    name=input("请输入用户名:")
+    password=input("请输入密码:")
+
+    if username==name and userpassword==password:
+        print("输入正确")
+        break
+
+    if name!=username:
+        print("用户名输入错误，请重新输入:")
+        continue
+    if password!=userpassword:
+        print("密码输入错误，请重新输入:")
+    
+