save project

diy2.py

@@ -3,11 +3,13 @@ B = "123456"
 while True:
     C = input("请输入用户名:")
     D = input("请输入密码:")
-    if name == username and password == userpassword:
+    if A == C and B == D:
         print("登录成功!")
-    if A = C:
+    if A != C:
         print("NO1")
-    if B = D:
+
+    if B != D:
         print("NO2")
 
+
 print("欢迎来到贝尔编程!")
\ No newline at end of file