Add Langchain Pandas DataFrame Agent

[MarcSkovMadsen]

Addresses #79

Todo

• Implement POC
• Add .csv file to download in "Welcome" message.
• Remove rerun, undo and clear buttons
• Add tests
• Create video and thumbnail
• Add docstring
• Add option to use PanelCallbackHandler to better understand what goes on.

Won't do now. Maybe one day someone will.

• Add options to configure llm and or pandas agent.
• Add Reset All button. See ChatInterface: Expose Actions holoviz/panel#5711

Related issues

• Fast css not applied initially when using ChatInterface holoviz/panel#5709
• ChatInterface callback cannot return ChatMessage holoviz/panel#5708
• PanelCallbackHandler design principle holoviz/panel#5707
• ChatInterface taskbar not working with Fast dark theme holoviz/panel#5705
• ChatInterface: Expose Actions holoviz/panel#5711

langchain_chat_pandas_df.mp4

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (2b801a4) 78.88% compared to head (8903405) 78.88%.
Report is 8 commits behind head on main.

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Additional details and impacted files

@@           Coverage Diff           @@
##             main      #83   +/-   ##
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  Coverage   78.88%   78.88%           
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  Files           5        5           
  Lines         161      161           
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  Hits          127      127           
  Misses         34       34           

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[MarcSkovMadsen]

Thanks for the feedback @ahuang11 . I've implemented the changes. Let me know if there is more I should do?

[ahuang11]

I encounter some issues (duplicates using show chain of thought) using https://github.com/holoviz/panel/pull/5710/files; I'm not sure if it's related to the branch or this.

[MarcSkovMadsen]

I encounter some issues (duplicates using show chain of thought) using https://github.com/holoviz/panel/pull/5710/files; I'm not sure if it's related to the branch or this.

How can I reproduce this? I see the exception at the top, but does not know the steps you applied to get to that?

[ahuang11]

Thanks for adding this example!

[ahuang11]

I encounter some issues (duplicates using show chain of thought) using https://github.com/holoviz/panel/pull/5710/files; I'm not sure if it's related to the branch or this.

How can I reproduce this? I see the exception at the top, but does not know the steps you applied to get to that?

I believe I just copied the text from the sample query provided.