save project

diy2.py

+azh = "python"
+amm = "123456"
+while True:
+    zh = input("请输入用户名:")
+    mm = input("请输入密码:")
+    if zh == azh and mm == amm:
+        print("登录成功!")
+    elif zh!=azh:
+        print("用户名不存在")
+    else:
+        print("密码不正确")
+print("欢迎来到贝尔编程!")
\ No newline at end of file