save project

diy2.py

+username = "python"
+userpassword = "123456"
+while True:
+    name=input("请输入姓名：")
+    password=input("请输入密码：")
+    if name==username and password== userpassword:
+        print('登陆成功！')
+        break
+    if name!=username:
+        print("用户名错误")  
+        continue  
+    if password!=userpassword:
+        print("用密码错误")   
+    print("重新输入")
+print("欢迎来到贝编程")
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