"""Create fallback_executor
Generated by Phi-Octopus Eden
2025-11-06 13:39:52.650206
"""

```python
from typing import Any, Callable, Optional


class FallbackExecutor:
    """
    A class for creating a fallback executor that attempts to run a primary function,
    and if it fails, executes a backup plan.

    :param primary_function: The primary function to execute.
    :param backup_plan: The function or callable to use as a backup in case of failure.
    """

    def __init__(self, primary_function: Callable[..., Any], backup_plan: Optional[Callable[..., Any]] = None):
        self.primary_function = primary_function
        self.backup_plan = backup_plan

    def execute(self, *args: Any, **kwargs: Any) -> Any:
        """
        Executes the primary function with given arguments and returns its result.
        If an exception occurs during execution, it attempts to use the backup plan.

        :param args: Positional arguments for the primary function.
        :param kwargs: Keyword arguments for the primary function.
        :return: The result of the executed function or None if both fail.
        """
        try:
            return self.primary_function(*args, **kwargs)
        except Exception as e:
            print(f"Primary function failed with error: {e}")
            if self.backup_plan is not None:
                return self.backup_plan(*args, **kwargs)
            else:
                print("No backup plan available. Execution failed.")
                return None


# Example usage
def primary_math_operation(a: int, b: int) -> int:
    """
    A simple math operation that may fail if division by zero occurs.
    :param a: Dividend.
    :param b: Divisor.
    :return: Quotient or 0 in case of an error.
    """
    return a / b


def backup_math_operation(a: int, b: int) -> int:
    """
    A fallback math operation that returns the difference instead of the quotient.
    :param a: Minuend.
    :param b: Subtrahend.
    :return: Difference or 0 in case of an error.
    """
    return a - b


if __name__ == "__main__":
    # Using FallbackExecutor
    fallback_executor = FallbackExecutor(primary_math_operation, backup_plan=backup_math_operation)
    
    # Successful execution with non-zero divisor
    result = fallback_executor.execute(10, 2)  # Should be 5.0
    print(f"Result: {result}")
    
    # Fallback due to division by zero
    result = fallback_executor.execute(10, 0)  # Should use backup_plan and return 10
    print(f"Result after fallback: {result}")

```