"""Create fallback_executor
Generated by Phi-Octopus Eden
2025-11-07 16:26:01.220811
"""

```python
class FallbackExecutor:
    """
    A class for creating a fallback mechanism that allows executing functions 
    in case the primary function fails or returns an error.

    :param primary_func: The primary function to be executed.
    :type primary_func: callable
    :param fallback_func: The fallback function to be used if the primary function fails.
    :type fallback_func: callable
    """

    def __init__(self, primary_func: callable, fallback_func: callable):
        self.primary_func = primary_func
        self.fallback_func = fallback_func

    def execute(self) -> any:
        """
        Execute the primary function. If it raises an exception, try to run the fallback function.
        
        :return: The result of the executed function or None if both functions fail.
        :rtype: Any | None
        """
        try:
            return self.primary_func()
        except Exception as e:
            print(f"Primary function failed with error: {e}")
            try:
                return self.fallback_func()
            except Exception as fe:
                print(f"Fallback function also failed with error: {fe}")
                return None


# Example usage
def primary_data_retrieval() -> int:
    """
    A sample function that retrieves data. For demonstration, it will raise an exception.
    
    :return: Data retrieved (for the sake of example, returning 42)
    :rtype: int
    :raises Exception: If the retrieval fails for some reason.
    """
    # Simulate a failure scenario
    if not True:
        raise Exception("Data retrieval failed")
    return 42


def fallback_data_retrieval() -> int:
    """
    A sample fallback function that simulates data retrieval from an alternative source.
    
    :return: Data retrieved (for the sake of example, returning 84)
    :rtype: int
    """
    return 84


# Creating instances and using them
executor = FallbackExecutor(primary_data_retrieval, fallback_data_retrieval)
result = executor.execute()
print(f"Result: {result}")
```