Creates a submodule for contributed functions

[gagb]

Why are these changes needed?

Currently AutoGen supports contributed agents and capabilities. Why not support a set of contributed functions?

This PR creates a new submodule in agentchat/contrib called functions.

Function store further contains many (stateless) functions that can be used with function calling API.

See the added notebook to see those function in use.

Specifying dependencies via a FunctionWithRequirements decorator

Right now, I specify dependencies for each function via a decorator. The decorator wraps the function and check availability of dependencies. If they aren't it install it. For example,

@FunctionWithRequirements(python_packages=["foo", "bar==0.1.0"], secrets=["BETA"])
def gamma():
    # logic that requires foo, bar, and BETA

Pending

• Automate specification of description from doc string [done]
• Registering bulk [done
• Specifying secrets [done]
• Add warnings for other dependencies?

Limitations

• Doesn't support stateful tools

Related issue number

#1563

Checks

• [ ] I've included any doc changes needed for https://microsoft.github.io/autogen/. See https://microsoft.github.io/autogen/docs/Contribute#documentation to build and test documentation locally.
• [ ] I've added tests (if relevant) corresponding to the changes introduced in this PR.
• [ ] I've made sure all auto checks have passed.

[codecov-commenter]

Codecov Report

Attention: 152 lines in your changes are missing coverage. Please review.

Comparison is base (5d81ed4) 35.03% compared to head (084ab2e) 48.32%. Report is 2 commits behind head on main.

Files	Patch %	Lines
autogen/agentchat/contrib/functions/file_utils.py	0.00%	95 Missing :warning:
...gen/agentchat/contrib/functions/functions_utils.py	0.00%	46 Missing :warning:
...togen/agentchat/contrib/functions/youtube_utils.py	0.00%	11 Missing :warning:

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #1572       +/-   ##
===========================================
+ Coverage   35.03%   48.32%   +13.28%     
===========================================
  Files          44       53        +9     
  Lines        5383     5838      +455     
  Branches     1247     1429      +182     
===========================================
+ Hits         1886     2821      +935     
+ Misses       3342     2792      -550     
- Partials      155      225       +70     

Flag	Coverage Δ
unittests	48.28% <0.00%> (+13.25%)	:arrow_up:

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[jackgerrits]

Bundling the requirements with the function is a super good idea. However, if these functions weren't executed as "tools" but were shipped into the code execution environment then this mode of dependency installation would not work right? If the execute_function call was able to inspect if dependencies were needed and satisfy them explicitly then I feel like it would be more flexible? Because then the same could be done when this was used like a skill in another code execution environment

[afourney]

The @ requires decorator is super interesting.

I note that we are in the same situation for many contrib agents that are now added as optional dependencies (RAG, Teachability, WebSurfer, etc.) I wonder if we should consolidate on mechanisms here?

[gagb]

Bundling the requirements with the function is a super good idea. However, if these functions weren't executed as "tools" but were shipped into the code execution environment then this mode of dependency installation would not work right? If the execute_function call was able to inspect if dependencies were needed and satisfy them explicitly then I feel like it would be more flexible? Because then the same could be done when this was used like a skill in another code execution environment

If you remove requires, the agent will install the package from package missing error. I have some ideas to improve this. Will report back.

[jackgerrits]

Bundling the requirements with the function is a super good idea. However, if these functions weren't executed as "tools" but were shipped into the code execution environment then this mode of dependency installation would not work right? If the execute_function call was able to inspect if dependencies were needed and satisfy them explicitly then I feel like it would be more flexible? Because then the same could be done when this was used like a skill in another code execution environment

If you remove requires, the agent will install the package from package missing error. I have some ideas to improve this. Will report back.

I'm totally happy to move forward with this. Just wanted to make sure resolving that part of that was raised and we can circle back to it

[gagb]

Just one early comment: functions instead of function_store? People typically associate the word store with either a data store or an app store.

fixed.

[gagb]

The @ requires decorator is super interesting.

I note that we are in the same situation for many contrib agents that are now added as optional dependencies (RAG, Teachability, WebSurfer, etc.) I wonder if we should consolidate on mechanisms here?

I like that. Would love to do that in a different PR tho!

[afourney]

@gagb Ok, I added a ton more comments based on my experience experimenting with this last night.

[gagb]

@gagb Ok, I added a ton more comments based on my experience experimenting with this last night.

Awesome! This is so useful! Will fix and report back!

[gagb]

@jackgerrits check if you need this for UDFs and take appropriate actions -- add to roadmap/close.

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