Prompt should be optional so model.prompt(attachments=llm.Attachment(...)) works

[simonw]

It's optional in the CLI but not in the Python API.

[simonw]

>>> import llm
>>> model = llm.get_model("gpt-4o-mini")
>>> model.prompt(attachments=[llm.Attachment(url="https://static.simonwillison.net/static/2024/pelican.jpg")])
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: _Model.prompt() missing 1 required positional argument: 'prompt'

[simonw]

After the fix:

>>> print(model.prompt(attachments=[llm.Attachment(url="https://static.simonwillison.net/static/2024/pelican.jpg")]))
This image features a pelican standing on rocks near the water. Pelicans are large water birds known for their distinctive long bills and throat pouches, which they use for fishing. The setting includes some boats in the background, suggesting a coastal environment. If you have any specific questions about pelicans or the scene, feel free to ask!