save project

diy1.py

 username = "MC"  
 username = "MC"  
 userpassword = "1234567890" 
 userpassword = "1234567890" 
-name=input("MC")
-password=input("1234567890") 
-if name == username and password == userpassword
-    print("登录成功")
+while True:
+    name=input("请输入用户名")
+    password=input("请输入密码") 
+    if name == username and password == userpassword:
\ No newline at end of file
+        print("登录成功")
+        break
+    elif name != username:
+          print("用户名错误！请*****************************************")
+    else:
+       print("密码错误！请*****************************************") 
+print("hellow************************************************")