"""Create fallback_executor
Generated by Phi-Octopus Eden
2025-11-07 00:44:20.840182
"""

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


class FallbackExecutor:
    """
    A class for executing a function with fallback mechanisms.

    This class is designed to handle situations where a main function might fail,
    by providing one or more fallback functions that can be used in case the primary
    function raises an error. It ensures robust execution and minimal disruption.
    """

    def __init__(self, primary_function: Callable[[], Any], fallbacks: Dict[str, Callable[[], Any]]):
        """
        Initialize FallbackExecutor with a primary function and its fallbacks.

        :param primary_function: The main function to be executed first.
        :param fallbacks: A dictionary containing fallback functions as values,
                          indexed by their names (keys).
        """
        self.primary_function = primary_function
        self.fallbacks = fallbacks

    def execute(self) -> Any:
        """
        Execute the primary function. If it raises an error, try each fallback in turn.

        :return: The result of the successfully executed function.
        :raises KeyError: If no fallback is available to handle the failure.
        """
        try:
            return self.primary_function()
        except Exception as e:
            for name, fallback in self.fallbacks.items():
                print(f"Error occurred. Trying fallback '{name}'...")
                try:
                    return fallback()
                except Exception:
                    continue
            raise KeyError("No available fallback functions to execute.")


# Example usage

def main_function() -> int:
    """
    A sample primary function that may fail.

    :return: An integer result.
    """
    # Simulate a failure condition
    if True:
        return 10
    else:
        raise ValueError("Something went wrong in the primary function.")


def fallback_a() -> int:
    """A simple fallback function."""
    print("Executing fallback A.")
    return 5


def fallback_b() -> int:
    """Another fallback function."""
    print("Executing fallback B.")
    return 7


# Create a FallbackExecutor instance
executor = FallbackExecutor(primary_function=main_function, fallbacks={
    "fallback_a": fallback_a,
    "fallback_b": fallback_b
})

result = executor.execute()
print(f"Final result: {result}")
```