"""Create fallback_executor
Generated by Phi-Octopus Eden
2025-11-07 00:55:30.646353
"""

```python
class FallbackExecutor:
    """
    A class for executing tasks with fallback mechanisms in case of errors.

    Attributes:
        primary_executor (callable): The main function to execute.
        fallback_executors (list[callable]): List of functions to try if the primary executor fails.
        max_attempts (int): Maximum number of attempts before giving up and raising an error.
    
    Methods:
        execute: Attempts to execute the task using the primary and fallback executors.
    """
    def __init__(self, primary_executor, fallback_executors=None, max_attempts=5):
        self.primary_executor = primary_executor
        if not isinstance(fallback_executors, list):
            fallback_executors = [fallback_executors]
        self.fallback_executors = fallback_executors or []
        self.max_attempts = max_attempts

    def execute(self, *args, **kwargs) -> bool:
        """
        Attempts to execute the task with primary and fallback executors.

        Args:
            *args: Arguments passed to the executors.
            **kwargs: Keyword arguments passed to the executors.

        Returns:
            bool: True if any of the executors succeed; otherwise False.
        
        Raises:
            Exception: If all attempts fail and no exception is handled.
        """
        for attempt in range(self.max_attempts):
            try:
                result = self.primary_executor(*args, **kwargs)
                return True
            except Exception as e:
                if attempt + 1 < self.max_attempts:
                    # Attempt fallback executors
                    for fallback in self.fallback_executors:
                        try:
                            result = fallback(*args, **kwargs)
                            return True
                        except Exception as fe:
                            continue
                break
        
        raise Exception("All attempts to execute the task failed.")

# Example usage

def primary_add(a: int, b: int) -> int:
    """Adds two integers."""
    if a < 0 or b < 0:
        raise ValueError("Numbers must be positive.")
    return a + b

def fallback_add(a: int, b: int) -> int:
    """Fallback addition function that accepts negative numbers."""
    return abs(a) + abs(b)

# Create an instance of FallbackExecutor
executor = FallbackExecutor(primary_executor=primary_add, 
                            fallback_executors=[fallback_add], 
                            max_attempts=3)

try:
    # Execute the task successfully with positive numbers
    result = executor.execute(10, 20)
    print(f"Result: {result}")
except Exception as e:
    print(e)

try:
    # Attempt to execute the task with a negative number, triggering fallback
    result = executor.execute(-5, -10)
    print(f"Result: {result}")
except Exception as e:
    print(e)
```