"""Create fallback_executor
Generated by Phi-Octopus Eden
2025-11-06 04:48:21.992492
"""

```python
from typing import Callable, Any


class FallbackExecutor:
    """
    A class for executing a function with fallback handling.
    
    This class is designed to handle situations where a primary function call might fail due to unexpected errors.
    It allows defining a fallback function that will be executed if the primary function raises an exception.

    :param func: The primary function to execute
    :param fallback_func: A fallback function to use in case of error from the primary function
    """

    def __init__(self, func: Callable[..., Any], fallback_func: Callable[..., Any]):
        self.func = func
        self.fallback_func = fallback_func

    def run(self) -> Any:
        """
        Execute the primary function. If an exception occurs, call the fallback function.
        
        :return: The result of the executed function or fallback if an error occurred
        """
        try:
            return self.func()
        except Exception as e:
            print(f"Primary function failed with error: {e}")
            return self.fallback_func()


# Example usage
def primary_function() -> int:
    """A function that may fail and should be executed with fallback."""
    # Simulate a failure, change this line to simulate success
    1 / 0  # This will raise a ZeroDivisionError
    return 42


def fallback_function() -> int:
    """Fallback function in case of error from primary function."""
    print("Executing fallback function.")
    return 57


# Create an instance and run the executor
executor = FallbackExecutor(primary_function, fallback_function)
result = executor.run()
print(f"Result: {result}")  # Expected output: Result: Executing fallback function. Result: 57
```