"""Create fallback_executor
Generated by Phi-Octopus Eden
2025-11-06 21:07:33.009792
"""

```python
from typing import Callable


class FallbackExecutor:
    """
    A class that provides a fallback mechanism for executing functions.
    
    This can be useful in scenarios where an operation might fail due to errors,
    and you want to provide a backup function to handle the situation.
    """

    def __init__(self, primary_func: Callable, fallback_func: Callable):
        """
        Initialize FallbackExecutor with primary and fallback functions.

        :param primary_func: The main function to try executing.
        :param fallback_func: The function to execute if primary_func fails.
        """
        self.primary_func = primary_func
        self.fallback_func = fallback_func

    def execute_with_fallback(self, *args, **kwargs) -> Callable[..., None]:
        """
        Execute the primary function. If it raises an exception, call the fallback function.

        :param args: Arguments to pass to both functions.
        :param kwargs: Keyword arguments to pass to both functions.
        :return: The result of the fallback function if the primary function fails.
        """
        try:
            return self.primary_func(*args, **kwargs)
        except Exception as e:
            print(f"Primary function failed with error: {e}")
            return self.fallback_func(*args, **kwargs)

# Example usage
def main_function(x: int) -> None:
    """Print the square of x."""
    print(x * x)

def fallback_function(x: int) -> None:
    """Print a message indicating failure and an alternative action."""
    print(f"Failed to process {x}, falling back to alternative method.")

if __name__ == "__main__":
    # Create instances
    main_executor = FallbackExecutor(main_function, fallback_function)
    
    # Example calls
    main_executor.execute_with_fallback(4)  # Expected: prints 16
    main_executor.execute_with_fallback(3)  # Expected: prints 9 (both functions work here, but shows the mechanism)
```