feat: Basic Error Handlers + Tests

[AttAditya]

LangEx 0.4.2

Release Summary

• Update Type: Minor
• Update Version: 0.4.2
• Breaking Changes: No
• Backwards Compatibility: NA
• Target Issue: None

Changelog

• Change 1
  • Added error_handler decorator in langex/handlers/err_handlers.py
  • Provides generic exception handling with fallback
  • Supports custom exception types and fallback functions
• Change 2
  • Created catch and safe_call utilities in langex/core/handlers.py
  • Exposes them via __all__ for public use
  • Enables safe function execution and exception suppression
• Change 3
  • Added unit tests in tests/handlers/test_err_handlers.py
  • Verifies safe_call returns None on error
  • Verifies catch returns specified fallback value

Updated Library Highlights

Error Handling Utilities

from langex.core.handlers import catch, safe_call

@safe_call
def risky_operation():
    # This will not raise
    pass

@catch(Exception, lambda: "fallback")
def potentially_failing():
    raise ValueError("oops")

Future Plans

• Integrate error handling into other core modules
• Expand fallback mechanisms to support async functions
• Add more granular logging options

Notes

• None

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