Add tool calling demo notebook to README.md

[oliveirabruno01]

Adds a tool calling example notebook. Solves #1400 and partially #1561

Currently I'm linking to a personal colab link, but I can send a PR to unsloth/notebooks as well with the notebook.

The example uses Llama-3.1-8b and user-defined custom tools.

[danielhanchen]

Thanks! Is there a way to actually make calculate_loan_emi executable? Maybe via exec / eval?

[oliveirabruno01]

Absolutely! I'll refactor the Llama-3.1-8b notebook to be more streamlined, will see if I can use user-defined tools in multi-round chat without direct string manipulation.

I made this qwen-2.5-1.5b demo that is way more straightforward, and am testing directly with Python tools.

I'll update the Llama-3.1-8b demo soon

[oliveirabruno01]

Is there a way to actually make calculate_loan_emi executable? Maybe via exec / eval?

I've implemented your suggestion and am defining the tool as a Python function.

Qwen notebook is still more refined than Llama but both notebooks are in a good state and a good starting point IMO

Let me know if there’s anything else I should adjust.

• Qwen-2.5-Instruct example
• Llama-3.1-Instruct example