save project

diy2.py

+username = "python"
+userpassword = "123456"
+while True:
+    name = input("请输入用户名:")
+    if name != username:
+        print("请输入正确名称!")
+    password = input("请输入密码:")
+    elif name == username and password != userpassword:
+        print("请输入正确密码!")
+    else:
+        break
+print("欢迎来到贝尔编程!")
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