Improve static tools initialization safety

[kingdomad]

Create a copy of static_tools to avoid modifying the original object.

[kingdomad]

@aymeric-roucher Is that ok?

[albertvillanova]

Thanks.

With your contribution, the originally passed static_tools dict will not be changed by evaluate_python_code function. Specifically, in this line:

smolagents/src/smolagents/local_python_executor.py

Line 1282 in fe2f4e7

static_tools["final_answer"] = final_answer

[albertvillanova]

It breaks test: test_function_persistence_across_steps

[kingdomad]

It breaks test: test_function_persistence_across_steps

How do I obtain this test code?

[kingdomad]

I have fixed the issue. Since custom_tools needs to pass tool objects that are dynamically created during code execution, it is necessary to allow modifications to the original object.

[albertvillanova]

Thank you.