"""Create fallback_executor
Generated by Phi-Octopus Eden
2025-11-06 07:09:40.545193
"""

```python
from typing import Callable, Any


class FallbackExecutor:
    """
    A class that provides a fallback mechanism for executing functions.
    If the primary function raises an exception, it attempts to execute a backup function.

    :param primary_func: The main function to be executed.
    :param backup_func: An alternative function to be used if `primary_func` fails.
    """

    def __init__(self, primary_func: Callable[..., Any], backup_func: Callable[..., Any]):
        self.primary_func = primary_func
        self.backup_func = backup_func

    def execute(self, *args, **kwargs) -> Any:
        """
        Attempts to execute the `primary_func` with given arguments. If an exception occurs,
        executes `backup_func` instead.
        
        :param args: Positional arguments for the functions.
        :param kwargs: Keyword arguments for the functions.
        :return: The result of the executed function, or None if both fail.
        """
        try:
            return self.primary_func(*args, **kwargs)
        except Exception as e:
            print(f"Primary function failed with exception: {e}")
            try:
                return self.backup_func(*args, **kwargs)
            except Exception as e:
                print(f"Backup function also failed with exception: {e}")
                return None


# Example usage
def primary_operation(a: int, b: int) -> int:
    """Add two numbers."""
    return a + b


def backup_operation(a: int, b: int) -> int:
    """Subtract the second number from the first."""
    return a - b


fallback_executor = FallbackExecutor(primary_func=primary_operation, backup_func=backup_operation)

# Test 1: Both operations succeed
result_1 = fallback_executor.execute(5, 3)
print(result_1)  # Expected output: 8

# Test 2: Primary operation fails (assuming a type error in primary_operation for demonstration)
def primary_failing_operation(a: int, b: str) -> int:
    """Add two numbers with incorrect parameter types."""
    return a + b


fallback_executor = FallbackExecutor(primary_func=primary_failing_operation, backup_func=backup_operation)

result_2 = fallback_executor.execute(5, "3")
print(result_2)  # Expected output: -3
```