save project

diy1.py

 username = "python"  
-userpassword = "123456"  
-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")
+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")
+        break
+    print("用户名和密码错误!请重新输入")
+print("欢迎来到贝尔编程!")    
 
 
 # 如果用户输入的账号、密码正确，提示登陆成功
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