save project

diy2.py

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