save project

xx.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 userpassword==password:
+        print("登录成功")
+        break
+    if name!=username:
+        print("用户名❌")
+    if password!=userpassword:
+        print("密码❌")
+print("欢迎来到贝尔编程")
+