Refactor chat_generate

[zhaochenyang20]

Description

1. I create ERROR_ERRORS_TO_MESSAGES to make the error handling clearer for _throttled_openai_completion_acreate and _throttled_openai_chat_completion_acreate.
2. There is no TimeoutError in openai.error, so I delete it.
3. I add a new parameter n for both completion, which is the number of responses to generate for each API call.

References

• Suggetion for the error handler of _throttled_openai_chat_completion_acreate #169
• https://platform.openai.com/docs/api-reference/chat/create

Blocked by

• This one works fine. Sorry for the previous one. I don't know why it's so strange.

[zhaochenyang20]

Hey @neubig and @cabreraalex, sorry for creating this one and discarding the previous PR. I failed several times for the pre-commit of #170, then I uninstall all the environments for my local Python 3.11.3, use 3.9.17, delete the previous fork, and create a new one. It seems to work out. 🤔

The way to fix this is really strange. Delete, re-install, and re-run them all. 😂 I spent a long time searching for help from StackOverflow and so on...

[zhaochenyang20]

Thanks so much for your help and advise for this PR and issue #169!

[neubig]

Thanks @zhaochenyang20 , this looks great! There is just one small change request. I used Github's suggestion functionality, so you should just be able to click "accept suggestion".

And sorry about the trouble with the isort stuff, I'm not sure what was causing that

[zhaochenyang20]

Thanks @zhaochenyang20 , this looks great! There is just one small change request. I used Github's suggestion functionality, so you should just be able to click "accept suggestion".

And sorry about the trouble with the isort stuff, I'm not sure what was causing that

Done! The other part is just fine. I don't know what causes this strange behavior of isort either. 🤷🏻‍♀️

[neubig]

Great, merged. Thanks for the contribution!