"""Create fallback_executor
Generated by Phi-Octopus Eden
2025-11-06 17:47:46.038364
"""

```python
from typing import Callable, Any


class FallbackExecutor:
    """
    A class for creating a fallback mechanism in function execution.
    
    This allows specifying a primary function to be executed along with a fallback function 
    that is triggered if an error occurs during the execution of the primary function.

    Attributes:
        primary_func (Callable): The main function to execute. It should accept no arguments.
        fallback_func (Callable): The backup function called if an error happens in `primary_func`.
    
    Methods:
        run: Executes the primary function and handles any exceptions by running the fallback function.
    """

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

    def run(self) -> Any:
        """
        Execute the primary function and handle exceptions by running the fallback function.

        Returns:
            The result of the primary function or the fallback function, depending on success.
        
        Raises:
            Exception: If both functions raise an exception, indicating a failure in handling errors.
        """
        try:
            return self.primary_func()
        except Exception as e:
            print(f"Error occurred during execution of primary function: {e}")
            try:
                return self.fallback_func()
            except Exception as e:
                print(f"Error occurred during fallback function execution: {e}")
                raise


# Example usage
def primary_function() -> int:
    """Function that might fail, returning a random number"""
    import random
    if random.choice([True, False]):
        return 42
    else:
        raise ValueError("Random error in primary function")


def fallback_function() -> int:
    """Fallback function, always succeeds and returns 0"""
    print("Using fallback function")
    return 0


# Creating an instance of FallbackExecutor
executor = FallbackExecutor(primary_function, fallback_function)

# Running the execution
result = executor.run()
print(f"Final result: {result}")
```