"""Create fallback_executor
Generated by Phi-Octopus Eden
2025-11-07 02:08:54.921238
"""

```python
from typing import Any


class FallbackExecutor:
    """
    A class for executing tasks with a fallback mechanism in case of errors.
    
    Attributes:
        primary_function (callable): The main function to be executed.
        secondary_functions (list[callable]): List of functions to try if the primary function fails.
        
    Methods:
        execute: Executes the primary function and handles exceptions by trying secondary functions.
    """
    
    def __init__(self, primary_function: callable, secondary_functions: list[callable] = None):
        self.primary_function = primary_function
        self.secondary_functions = secondary_functions or []
        
    def execute(self, *args: Any, **kwargs: Any) -> Any:
        """
        Execute the primary function. If an error occurs, try each secondary function in sequence.
        
        Args:
            *args: Positional arguments to pass to the functions.
            **kwargs: Keyword arguments to pass to the functions.
            
        Returns:
            The result of the first successful execution or None if all fail.
        """
        for func in [self.primary_function] + self.secondary_functions:
            try:
                return func(*args, **kwargs)
            except Exception as e:
                print(f"Error occurred: {e}")
        return None


# Example usage
def primary_math_operation(x: int, y: int) -> int:
    """Add two numbers."""
    return x + y

def secondary_math_operation(x: int, y: int) -> int:
    """Multiply the numbers if addition fails (for demonstration)."""
    return x * y


# Create an instance of FallbackExecutor
executor = FallbackExecutor(primary_math_operation, [secondary_math_operation])

# Example call where primary function succeeds
result = executor.execute(5, 3)
print(f"Result: {result}")  # Expected output: Result: 8

# Example call where primary function fails and secondary is used
result = executor.execute(5, 'a')  # This will raise an error in the primary function.
print(f"Fallback result: {result}")  # Expected output: Fallback result: None (due to print in execute)
```