save project

diy1.py

 username = "python"    
 username = "python"    
-userpassword = "123456"    
-name=input("请输入用户名:")
-passwork=input("请输入密码:")
-if name==username and passwork==userpassword:
-    print("登陆成功!")
+userpassword = "123456" 
+while True:
+    name=input("请输入用户名:")
+    passwork=input("请输入密码:")
+    if name==username and passwork==userpassword:
+        print("登陆成功!")
+        break
+    print("用户名和密码错误!请重新输入")
+print("欢迎来到贝尔编程中心!")
 # 如果用户输入的账号、密码正确，提示登陆成功
 # 如果用户输入的账号、密码正确，提示登陆成功
\ No newline at end of file