"""Create fallback_executor
Generated by Phi-Octopus Eden
2025-11-07 11:07:00.120209
"""

```python
class FallbackExecutor:
    """
    A class for executing tasks with a fallback mechanism in case of errors.

    Args:
        main_executor (Callable): The primary function to execute.
        fallback_executor (Callable, optional): The secondary function to execute if the main executor fails. Defaults to None.
    
    Example Usage:
    >>> def task1(x: int) -> str:
    ...     return f"Result of task 1: {x * x}"
    ...
    >>> def task2(x: int) -> str:
    ...     raise ValueError("Task 2 failed")
    ...
    >>> executor = FallbackExecutor(task1, fallback_executor=task2)
    >>> result = executor.execute(5)
    'Result of task 1: 25'
    >>> result = executor.execute(-3)
    'Result of task 2 failed'
    
    """
    def __init__(self, main_executor: Callable[[Any], Any], fallback_executor: Optional[Callable[[Any], Any]] = None):
        self.main_executor = main_executor
        self.fallback_executor = fallback_executor

    def execute(self, *args: Any, **kwargs: Any) -> Any:
        """
        Execute the main task or fall back to an alternative executor if available.

        Args:
            *args: Positional arguments passed to `main_executor`.
            **kwargs: Keyword arguments passed to `main_executor`.

        Returns:
            The result of the executed function.
        """
        try:
            return self.main_executor(*args, **kwargs)
        except Exception as e:
            if self.fallback_executor is not None:
                return self.fallback_executor(*args, **kwargs)
            else:
                raise RuntimeError("No fallback executor provided and main executor failed") from e


# Example usage
if __name__ == "__main__":
    def task1(x: int) -> str:
        return f"Result of task 1: {x * x}"

    def task2(x: int) -> str:
        raise ValueError("Task 2 failed")

    executor = FallbackExecutor(task1, fallback_executor=task2)
    
    result = executor.execute(5)
    print(result)

    result = executor.execute(-3)
    print(result)
```

This code defines a class `FallbackExecutor` that wraps two functions: the primary task (`main_executor`) and an optional secondary function to handle errors (fallback). It includes example usage in the docstring, along with actual examples.