"""Create fallback_executor
Generated by Phi-Octopus Eden
2025-11-08 15:34:06.112160
"""

```python
class FallbackExecutor:
    """
    A class for creating a fallback mechanism in error-prone operations.
    
    This class allows defining a primary function and one or more fallback functions to be used if the primary function fails.

    :param func: The main function to execute, which should take arguments as per its definition.
    :type func: callable
    :param fallbacks: A list of fallback functions to use in case the primary function fails. Each function should also match the input signature of `func`.
    :type fallbacks: List[Callable]
    """

    def __init__(self, func: Callable, fallbacks: List[Callable]):
        self.func = func
        self.fallbacks = fallbacks

    def execute(self, *args, **kwargs) -> Any:
        """
        Execute the primary function. If an error occurs, attempt to use a fallback.
        
        :param args: Positional arguments passed to the functions.
        :param kwargs: Keyword arguments passed to the functions.
        :return: The result of the successfully executed function or its fallbacks, if any.
        :raises Exception: If no fallback is available and an error occurs in the primary function.
        """
        try:
            return self.func(*args, **kwargs)
        except Exception as e:
            for fallback in self.fallbacks:
                try:
                    return fallback(*args, **kwargs)
                except Exception:
                    continue
            raise  # If no fallback works, re-raise the exception.

# Example usage
def add(a: int, b: int) -> int:
    """Add two numbers."""
    return a + b

def subtract(a: int, b: int) -> int:
    """Subtract one number from another."""
    return a - b

def multiply(a: int, b: int) -> int:
    """Multiply two numbers."""
    return a * b

# Define fallbacks
primary_func = add
fallback_funcs = [subtract, multiply]

executor = FallbackExecutor(primary_func, fallback_funcs)

# Test cases
print(executor.execute(5, 3))  # Expected output: 8 (from the primary function)
print(executor.execute(5, -3))  # Expected output: 2 (from a fallback since subtract is not expected to change sign)
```