Use isinstance() instead of type() == for exception type checking

Replace `type(e) == litellm.exceptions.RateLimitError` with
`isinstance(e, litellm.exceptions.RateLimitError)` for proper exception
type checking.

While technically different behavior (isinstance() supports
inheritance while type() == requires exact match), isinstance() is the
correct and more robust approach for exception handling. If litellm
introduces subclasses of RateLimitError in the future, isinstance() will
correctly catch them.

Author: endolith

interpreter/core/respond.py

@@ -114,7 +114,7 @@ def respond(interpreter):
                         f"{output}\n\nThere might be an issue with your API key(s).\n\nTo reset your API key (we'll use OPENAI_API_KEY for this example, but you may need to reset your ANTHROPIC_API_KEY, HUGGINGFACE_API_KEY, etc):\n        Mac/Linux: 'export OPENAI_API_KEY=your-key-here'. Update your ~/.zshrc on MacOS or ~/.bashrc on Linux with the new key if it has already been persisted there.,\n        Windows: 'setx OPENAI_API_KEY your-key-here' then restart terminal.\n\n"
                     )
                 elif (
-                    type(e) == litellm.exceptions.RateLimitError
+                    isinstance(e, litellm.exceptions.RateLimitError)
                     and ("exceeded" in str(e).lower() or
                          "insufficient_quota" in str(e).lower())
                 ):