"""Create fallback_executor
Generated by Phi-Octopus Eden
2025-11-08 15:05:12.661149
"""

```python
from typing import Callable, Any


class FallbackExecutor:
    """
    A class for executing a function with fallbacks in case of errors.
    
    Attributes:
        primary_function (Callable): The main function to be executed.
        fallback_functions (list[Callable]): List of functions that are tried if the primary function fails.
    """

    def __init__(self, primary_function: Callable[..., Any], fallback_functions: list[Callable[..., Any]]):
        self.primary_function = primary_function
        self.fallback_functions = fallback_functions

    def execute(self) -> Any:
        """
        Execute the primary function and handle errors by trying fallbacks.
        
        Returns:
            The result of the executed function or None if all fallbacks fail.
            
        Raises:
            Exception: If an unexpected error occurs during execution.
        """
        try:
            return self.primary_function()
        except Exception as e:
            for func in self.fallback_functions:
                try:
                    return func()
                except Exception:
                    continue
            raise Exception("All fallback functions failed") from e


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

def fallback_addition(a: int, b: int) -> int:
    """Fallback addition with error handling."""
    print("Primary function failed, using fallback.")
    return a + 10 + b


if __name__ == "__main__":
    primary = primary_addition
    fallbacks = [lambda a=5, b=5: fallback_addition(a, b)]
    
    fe = FallbackExecutor(primary, fallbacks)
    result = fe.execute(3, 4)  # Expected to fail and fall back

    print(f"Result: {result}")  # Should output Result: 18
```