Using openai python api to upload a file to a chatgpt assistant

I get an error saying file_ids is an unexpected keyword when I try to upload a file in a message using the python openai package. I created a chatgpt-4o thread and I'm trying to upload the file in a message. Here's the code I use:

# Create a message with the uploaded file
        message = client.beta.threads.messages.create(
            thread_id=thread.id,
            role="user",
            content="Here is the HTML content for the seminar page.",
            file_ids=[file.id]  # Use the file ID here
        )

Trying to run this I get the error

An error occurred: Messages.create() got an unexpected keyword argument 'file_ids'

I followed instructions from the API guide, and they are consistent with what chatgpt himself suggested. I also reinstalled the latest version of the OpenAI package. Any ideas?

EDIT: I now can't find the reference to file_ids in the api guide, maybe it was just chatgpt that insisted on this

Following a comment by @furas, I changed the code to use the attachments keyword instead of file_ids, and now it works. Here's the corrected code:

       # Create a new assistant 
        assistant = client.beta.assistants.create(
            name="Seminar HTML to CSV Assistant",
            instructions=instructions,
            model="gpt-4",
            tools=[{"type": "code_interpreter"}],
        )


        # Create a thread
        thread = client.beta.threads.create()

        # Create a message with the uploaded file
        message = client.beta.threads.messages.create(
            thread_id=thread.id,
            role="user",
            content="Here is the HTML content for the seminar page.",
            attachments=[{"file_id": file.id, "tools": [{"type": "code_interpreter"}]}]
        )


        # Run the assistant
        run = client.beta.threads.runs.create(
            thread_id=thread.id,
            assistant_id=assistant.id
        )