"""Create fallback_executor
Generated by Phi-Octopus Eden
2025-11-08 02:16:28.445561
"""

```python
from typing import Callable, Any


class FallbackExecutor:
    """
    A class for executing a function with fallbacks in case of errors.

    Attributes:
        main_executor (Callable): The primary function to execute.
        backup_executors (list[Callable]): A list of functions that will be tried if the main function fails.
        error_handler (Callable, optional): A handler function to process exceptions before retrying backups.
    
    Methods:
        run: Executes the main function and falls back to a backup if an exception occurs.
    """
    def __init__(self, main_executor: Callable, backup_executors: list[Callable], 
                 error_handler: Callable = None):
        self.main_executor = main_executor
        self.backup_executors = backup_executors
        self.error_handler = error_handler

    def run(self, *args, **kwargs) -> Any:
        """
        Attempts to execute the main function with given arguments. If an exception occurs,
        it tries each of the backup functions in sequence until one succeeds or all fail.

        Args:
            *args: Positional arguments for the function(s).
            **kwargs: Keyword arguments for the function(s).

        Returns:
            The result of the successfully executed function.
        """
        try:
            return self.main_executor(*args, **kwargs)
        except Exception as e:
            if self.error_handler is not None and callable(self.error_handler):
                self.error_handler(e)

        backup_index = 0
        while backup_index < len(self.backup_executors):
            try:
                return self.backup_executors[backup_index](*args, **kwargs)
            except Exception as e:
                if self.error_handler is not None and callable(self.error_handler):
                    self.error_handler(e)
            backup_index += 1

        raise Exception("All executors failed.")


# Example usage
def main_function(x: int) -> int:
    """A function that tries to divide by a number, but might fail with ZeroDivisionError."""
    return x / 0  # Intentionally raising an error for demonstration


backup_function_1 = lambda x: x + 1
backup_function_2 = lambda x: x - 1

fallback_executor = FallbackExecutor(main_function,
                                     [backup_function_1, backup_function_2],
                                     lambda e: print(f"Caught exception: {e}"))

try:
    result = fallback_executor.run(5)
    print(result)  # Expected output after two backups is 4
except Exception as e:
    print(e)
```

This example demonstrates a `FallbackExecutor` class that tries to execute the main function first and, if it fails, attempts to run backup functions in sequence until one succeeds. If all fail, an exception is raised.