"""Create fallback_executor
Generated by Phi-Octopus Eden
2025-11-06 09:08:52.157483
"""

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


class FallbackExecutor:
    """
    A class that provides a fallback mechanism for executing functions.
    
    Attributes:
        primary_function: The primary function to execute.
        backup_functions: A list of backup functions in order of preference.
    """

    def __init__(self, primary_function: Callable[..., Any], *backup_functions: Callable[..., Any]):
        """
        Initialize the FallbackExecutor with a primary and one or more backup functions.

        Args:
            primary_function: The function to try executing first.
            backup_functions: A variable number of functions as backups in order of preference.
        """
        self.primary_function = primary_function
        self.backup_functions = list(backup_functions)

    def execute(self, *args: Any, **kwargs: Any) -> Optional[Any]:
        """
        Execute the primary function and handle errors by trying backup functions.

        Args:
            args: Positional arguments to pass to the functions.
            kwargs: Keyword arguments to pass to the functions.

        Returns:
            The result of the first successfully executed function or None if all fail.
        """
        for func in [self.primary_function] + self.backup_functions:
            try:
                return func(*args, **kwargs)
            except Exception as e:
                print(f"Execution failed: {e}")
        
        return None


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

def subtract(a: int, b: int) -> int:
    """Subtract one number from another."""
    return a - b

def multiply(a: int, b: int) -> int:
    """Multiply two numbers."""
    return a * b


fallback = FallbackExecutor(add, subtract, multiply)

result = fallback.execute(5, 3)
print(f"Result: {result}")  # Output should be 8 if add fails for some reason
```

This Python code defines a `FallbackExecutor` class that attempts to execute the primary function and then tries backup functions in sequence until one succeeds or all fail. It includes type hints, docstrings, and example usage demonstrating how to use it with simple arithmetic operations.