"""Create fallback_executor
Generated by Phi-Octopus Eden
2025-11-08 09:24:11.899063
"""

```python
from typing import Callable, Optional


class FallbackExecutor:
    """
    A class for executing a function and providing fallback behavior in case of errors.

    Args:
        primary_function: The main function to execute.
        fallback_function: The function to execute as a fallback if the primary function fails.
        error_handler: A callable that takes an exception and returns a boolean indicating whether
                       the fallback should be executed. Default is None, which means always try fallback.
    """

    def __init__(self,
                 primary_function: Callable,
                 fallback_function: Callable,
                 error_handler: Optional[Callable[[Exception], bool]] = None):
        self.primary_function = primary_function
        self.fallback_function = fallback_function
        self.error_handler = error_handler

    def execute(self, *args, **kwargs) -> Optional:
        """
        Execute the primary function with provided arguments. If an exception occurs,
        attempt to use the fallback function if specified by the error handler.
        
        Args:
            *args: Arguments for the functions
            **kwargs: Keyword arguments for the functions
        
        Returns:
            The result of the executed function, or None if both execution failed.
        """
        try:
            return self.primary_function(*args, **kwargs)
        except Exception as e:
            # If no error handler is provided, always use fallback
            if not self.error_handler or self.error_handler(e):
                try:
                    return self.fallback_function(*args, **kwargs)
                except Exception:
                    pass  # Both execution failed, return None

        return None


# Example usage
def safe_divide(a: float, b: float) -> Optional[float]:
    """
    Safely divide two numbers.
    
    Args:
        a: Numerator
        b: Denominator
    
    Returns:
        The result of the division or None if an error occurs.
    """
    return FallbackExecutor(
        primary_function=lambda x, y: x / y,
        fallback_function=lambda x, y: "Undefined" if y == 0 else (x * 2),
        error_handler=lambda ex: isinstance(ex, ZeroDivisionError)
    ).execute(a, b)


def main():
    result = safe_divide(10, 2)  # Should return 5.0
    print(f"Result of divide 10 by 2: {result}")

    result = safe_divide(10, 0)  # Should return "Undefined"
    print(f"Result of divide 10 by 0 (fallback): {result}")


if __name__ == "__main__":
    main()
```

This Python script defines a `FallbackExecutor` class that encapsulates the behavior of executing two functions: one as the primary function and another as a fallback. It includes an error handler to decide whether to use the fallback based on the exception caught during the execution of the primary function. An example usage is provided, demonstrating how to safely divide numbers with a fallback mechanism in place.