"""Create fallback_executor
Generated by Phi-Octopus Eden
2025-11-07 17:05:39.895251
"""

```python
from typing import Callable, Any


class FallbackExecutor:
    """
    A class that provides a mechanism for executing functions with fallback strategies.

    Args:
        primary_exec: The primary function to be executed.
        backup_execs: A list of backup functions to be tried in case the primary fails.
        error_handler: An optional custom error handler function.
    """

    def __init__(self, primary_exec: Callable[..., Any], backup_execs: list[Callable[..., Any]], error_handler: Callable[[Exception], None] = None):
        self.primary_exec = primary_exec
        self.backup_execs = backup_execs
        self.error_handler = error_handler

    def execute_with_fallback(self, *args, **kwargs) -> Any:
        """
        Execute the primary function. If an exception occurs, attempt to execute a fallback.

        Args:
            *args: Positional arguments passed to the functions.
            **kwargs: Keyword arguments passed to the functions.

        Returns:
            The result of the successfully executed function or None if all fail.
        """
        try:
            return self.primary_exec(*args, **kwargs)
        except Exception as e:
            if self.error_handler:
                self.error_handler(e)

            for backup in self.backup_execs:
                try:
                    return backup(*args, **kwargs)
                except Exception:
                    continue

        return None


# Example usage
def primary_function(x: int) -> str:
    """
    A primary function that tries to convert an integer to a string and return the result.
    """
    return str(x)


def backup1_function(x: int) -> str:
    """
    A backup function for converting an integer to its hexadecimal representation.
    """
    return hex(x)


def backup2_function(x: int) -> str:
    """
    Another backup function that converts an integer to its binary string representation.
    """
    return bin(x)


# Custom error handler
def custom_error_handler(exc: Exception):
    print(f"An error occurred: {exc}")

fallback_executor = FallbackExecutor(
    primary_exec=primary_function,
    backup_execs=[backup1_function, backup2_function],
    error_handler=custom_error_handler
)

result = fallback_executor.execute_with_fallback(42)
print(result)  # Should print '42' if successful, or the hexadecimal/binary representation if it fails.
```