openai.ChatCompletion is no longer supported

[shantanuo]

Getting this error:

APIRemovedInV1: 

You tried to access openai.ChatCompletion, but this is no longer supported in openai>=1.0.0 - see the README at https://github.com/openai/openai-python for the API.

You can run `openai migrate` to automatically upgrade your codebase to use the 1.0.0 interface. 

Alternatively, you can pin your installation to the old version, e.g. `pip install openai==0.28`

A detailed migration guide is available here: https://github.com/openai/openai-python/discussions/742

[daiyip]

Please install the daily Langfun release via: pip install langfun --pre.

[shantanuo]

It is working as expected after adding the --pre parameter. Appreciate your help.
Can you mention it in readme file that "pip install langfun" may not work?