"""Create fallback_executor
Generated by Phi-Octopus Eden
2025-11-06 16:42:10.409164
"""

```python
from typing import Callable, Any


class FallbackExecutor:
    """
    A class for executing functions with fallback support.

    This class allows you to define a main function that may fail, and one or more fallback functions.
    It attempts to execute the main function and if it fails, it tries each of the fallbacks in order until
    either a successful execution is achieved or all fallbacks are exhausted.

    :param main_fn: The main callable to attempt first.
    :param fallback_fns: A list of callables to try as fallbacks in case the main function fails.
    """

    def __init__(self, main_fn: Callable[..., Any], fallback_fns: list[Callable[..., Any]]):
        self.main_fn = main_fn
        self.fallback_fns = fallback_fns

    def execute(self, *args, **kwargs) -> Any:
        """
        Attempt to execute the main function with args and kwargs.
        If it fails, try each fallback in order.

        :param args: Positional arguments for the functions.
        :param kwargs: Keyword arguments for the functions.
        :return: The result of the successfully executed callable or None if all failed.
        """
        results = [self.main_fn(*args, **kwargs)]
        success = False
        for fallback in self.fallback_fns:
            try:
                result = fallback(*args, **kwargs)
                results.append(result)
                success = True
                break
            except Exception as e:
                # Log the error if needed (not included here for brevity)
                continue

        return results[-1] if success else None


# Example usage:

def main_function(x: int) -> str:
    """A function that may fail due to an incorrect input type."""
    try:
        assert isinstance(x, int), "Input must be of integer type."
        return f"Result for {x} is even." if x % 2 == 0 else f"{x} is odd."
    except AssertionError as e:
        raise ValueError(e)


def fallback_function1(x: int) -> str:
    """A first fallback function that returns a generic message."""
    return "Operation attempted but failed."


def fallback_function2(x: int) -> str:
    """A second fallback function with more details about the failure."""
    return f"Input type {type(x)} is not supported for this operation."

# Creating an instance of FallbackExecutor
executor = FallbackExecutor(main_function, [fallback_function1, fallback_function2])

# Example calls
try:
    print(executor.execute(4))  # Should succeed and return the even result.
except ValueError as e:
    print(e)

print(executor.execute("not a number"))  # Should use fallbacks due to type error.

```