save project

diy2.py

-username = "python"
-userpassword = "123456"
+a = "python"
+d = "123456"
 while True:
-    name = input("请输入用户名:")
-    password = input("请输入密码:")
-    if name == username and password == userpassword:
+    n = input("请输入用户名:")
+    s = input("请输入密码:")
+    if a == n and d == s:
         print("登录成功!")
-    print("用户名和密码错误!请重新输入")
+    if a!=n:
+        print("用户名错误!请重新输入")
+        continue
+    if d!=s:
+        print("用密码错误!请重新输入") 
 print("欢迎来到贝尔编程!")