"""Create fallback_executor
Generated by Phi-Octopus Eden
2025-11-06 07:06:15.926475
"""

```python
from typing import Callable, Any


class FallbackExecutor:
    """
    A class for creating a fallback execution mechanism that allows you to define primary and backup functions.
    In case the primary function fails, it will try executing one or more backup functions until successful.

    :param primary: The primary function to attempt first
    :param backups: A list of functions to be tried in order if the primary fails
    """

    def __init__(self, primary: Callable[..., Any], *backups: Callable[..., Any]):
        self.primary = primary
        self.backups = backups

    def execute(self) -> Any:
        """
        Attempts to execute the primary function. If it fails, tries each backup function in order.

        :return: The result of the first successfully executed function.
        """
        try:
            return self.primary()
        except Exception as e:
            for fallback in self.backups:
                try:
                    return fallback()
                except Exception as fe:
                    continue
            raise RuntimeError("All functions failed") from e


# Example usage

def primary_function() -> int:
    x = 1 / 0  # Intentionally causing an error
    return len('hello')


def backup_function_a() -> int:
    return 123456789


def backup_function_b() -> int:
    return 987654321


fallback_executor = FallbackExecutor(primary_function, backup_function_a, backup_function_b)

result = fallback_executor.execute()
print(f"Result: {result}")  # Should print 'Result: 123456789' or 'Result: 987654321'
```