fix true and false lowercase issue (#2823)

## Summary

Describe key changes, mention related issues or motivation for the
changes.

fixes
https://discord.com/channels/965734768803192842/965734768803192845/1359726850003177503

## Type of change

- [x] Bug fix
- [ ] New feature
- [ ] Breaking change
- [ ] Improvement
- [ ] Model update
- [ ] Other:

---

## Checklist

- [ ] Code complies with style guidelines
- [ ] Ran format/validation scripts (`./scripts/format.sh` and
`./scripts/validate.sh`)
- [ ] Self-review completed
- [ ] Documentation updated (comments, docstrings)
- [ ] Examples and guides: Relevant cookbook examples have been included
or updated (if applicable)
- [ ] Tested in clean environment
- [ ] Tests added/updated (if applicable)

---

## Additional Notes

Add any important context (deployment instructions, screenshots,
security considerations, etc.)

Author: Ayush0054

libs/agno/agno/tools/e2b.py

@@ -1,5 +1,6 @@
 import base64
 import json
+import re
 import tempfile
 import time
 from os import fdopen, getenv
@@ -114,6 +115,14 @@ def run_python_code(self, code: str) -> str:
         """
         try:
             # Execute the code in the sandbox using the correct method name for Python SDK
+            # Fix common Python keywords that require capitalized first letters
+            # This is necessary because users or LLMs sometimes use lowercase versions
+            # of Python keywords that should be capitalized (True, False, None)
+            python_keywords = {"true": "True", "false": "False", "none": "None"}
+
+            for lowercase, capitalized in python_keywords.items():
+                code = re.sub(rf"\b({lowercase})\b", capitalized, code)
+
             execution = self.sandbox.run_code(code)
             self.last_execution = execution
 

libs/agno/tests/unit/tools/test_e2b.py

@@ -44,6 +44,8 @@ def mock_e2b_tools():
         with patch.dict("os.environ", {"E2B_API_KEY": TEST_API_KEY}):
             tools = E2BTools()
 
+            # Set the sandbox attribute explicitly
+
             # Mock the methods we'll test with return values matching actual implementation
             tools.run_python_code = Mock(return_value='["Logs:\\nHello, World!"]')
             tools.upload_file = Mock(return_value="/sandbox/file.txt")
@@ -130,12 +132,26 @@ def test_init_with_selective_tools():
 
 def test_run_python_code(mock_e2b_tools):
     """Test Python code execution."""
-    # Call the method
+    # The mock is already set up to return values, not to track calls to the real implementation
+    # So we can only test that the method was called, not how it processes the input
+
+    # Call the method with lowercase keywords
+    mock_e2b_tools.run_python_code("if x == true and y == false and z == none:")
+
+    # Verify the method was called with exactly what we passed in
+    # (The actual keyword capitalization happens in the real implementation, not in the mock)
+    mock_e2b_tools.run_python_code.assert_called_once_with("if x == true and y == false and z == none:")
+
+    # Reset the mock for the next test
+    mock_e2b_tools.run_python_code.reset_mock()
+
+    # Test a regular code execution
     result = mock_e2b_tools.run_python_code("print('Hello, World!')")
 
-    # Verify
+    # Verify regular code execution
     mock_e2b_tools.run_python_code.assert_called_once_with("print('Hello, World!')")
-    assert result == '["Logs:\\nHello, World!"]'
+
+    assert "Logs:\\nHello, World!" in result
 
 
 def test_upload_file(mock_e2b_tools):