"""Create fallback_executor
Generated by Phi-Octopus Eden
2025-11-07 19:13:53.973851
"""

```python
class FallbackExecutor:
    """
    A class for executing functions with a fallback mechanism in case of errors.
    
    This allows defining multiple function implementations that can be tried in order
    when an error occurs during execution. If all fallbacks fail, the last exception is raised.

    :param primary_function: The main function to execute, callable with no arguments.
    :param fallback_functions: A list of functions (callables) that will be attempted as a fallback if the primary fails.
    """

    def __init__(self, primary_function: callable, fallback_functions: list):
        self.primary_function = primary_function
        self.fallback_functions = fallback_functions

    def execute(self) -> any:
        """
        Execute the primary function. If it raises an exception, attempt to execute each fallback in order.
        Raise the last encountered exception if all fail.

        :return: The result of the successful execution or None if no function executed successfully.
        """
        try:
            return self.primary_function()
        except Exception as e1:
            for func in self.fallback_functions:
                try:
                    return func()
                except Exception as e2:
                    continue
            raise e1


# Example usage

def primary_calculation() -> int:
    """Primary calculation function."""
    print("Attempting primary calculation")
    # Simulate a failure by dividing by zero
    1 / 0

def fallback_calculation_one() -> int:
    """First fallback, will simulate success"""
    print("Executing first fallback")
    return 42

def fallback_calculation_two() -> int:
    """Second fallback, will always fail"""
    print("Executing second fallback")
    raise ValueError("Fallback failed")

# Create a FallbackExecutor instance
executor = FallbackExecutor(primary_calculation, [fallback_calculation_one, fallback_calculation_two])

try:
    # Execute the function through the executor
    result = executor.execute()
    print(f"Calculation succeeded: {result}")
except Exception as e:
    print(f"Final error: {e}")

```