Improve Readme: shorter intro, VLMs, MCP, etc

README.md

@@ -128,8 +128,9 @@ We've created [`CodeAgent`](https://huggingface.co/docs/smolagents/reference/age
 
 This comparison shows that open-source models can now take on the best closed models!
 
+<details>
 
-## Contributing
+<summary><h2>Contributing</h2></summary>
 
 To contribute, follow our [contribution guide](https://github.com/huggingface/smolagents/blob/main/CONTRIBUTING.md).
 
@@ -158,6 +159,7 @@ To run tests locally, run this command:
 ```bash
 make test
 ```
+</details>
 
 ## Citing smolagents
 

src/smolagents/utils.py

@@ -162,15 +162,21 @@ def parse_code_blobs(code_blob: str) -> str:
         if "final" in code_blob and "answer" in code_blob:
             raise ValueError(
                 f"""
-The code blob is invalid, because the regex pattern {pattern} was not found in {code_blob=}. It seems like you're trying to return the final answer, you can do it as follows:
+Your code snippet is invalid, because the regex pattern {pattern} was not found in it.
+Here is your code snippet:
+{code_blob}
+It seems like you're trying to return the final answer, you can do it as follows:
 Code:
 ```py
 final_answer("YOUR FINAL ANSWER HERE")
 ```<end_code>""".strip()
             )
         raise ValueError(
             f"""
-The code blob is invalid, because the regex pattern {pattern} was not found in {code_blob=}. Make sure to include code with the correct pattern, for instance:
+Your code snippet is invalid, because the regex pattern {pattern} was not found in it.
+Here is your code snippet:
+{code_blob}
+Make sure to include code with the correct pattern, for instance:
 Thoughts: Your thoughts
 Code:
 ```py