"""Create fallback_executor
Generated by Phi-Octopus Eden
2025-11-08 14:07:34.589736
"""

```python
from typing import Callable, Any


class FallbackExecutor:
    """
    A class for executing functions with a fallback mechanism in case an exception occurs.
    
    Usage:
    >>> def func_a(x: int) -> int:
    ...     return x + 10
    ...
    >>> def func_b(x: int) -> int:
    ...     return x * 2
    ...
    >>> fallback_executor = FallbackExecutor(func_a, [func_b])
    
    # Example of successful execution with no error
    >>> result = fallback_executor.execute(5)
    >>> print(result)
    15
    
    # Example where the first function fails and the second one is used as a fallback
    >>> try:
    ...     result = fallback_executor.execute('five')
    ... except ValueError:
    ...     pass  # This line is here to keep the example usage clean, in practice you would handle this differently
    >>> print(result)
    10
    
    """

    def __init__(self, primary_function: Callable[[Any], Any], fallback_functions: list[Callable[[Any], Any]]):
        """
        Initialize FallbackExecutor with a primary function and a list of fallback functions.

        :param primary_function: The primary function to be executed.
        :param fallback_functions: A list of functions that can be used as fallbacks if the primary function fails.
        """
        self.primary_function = primary_function
        self.fallback_functions = fallback_functions

    def execute(self, input_value: Any) -> Any:
        """
        Execute the primary function with the given input. If an exception is raised,
        attempt to use a fallback function.

        :param input_value: The value to be passed as input to the functions.
        :return: The result of the successfully executed function or None if all fail.
        """
        try:
            return self.primary_function(input_value)
        except Exception as e:
            for func in self.fallback_functions:
                try:
                    return func(input_value)
                except Exception:
                    continue
        return None


# Example usage with provided functions
def func_a(x: int) -> int:
    """Increment the input by 10."""
    return x + 10


def func_b(x: int) -> int:
    """Double the input."""
    return x * 2


if __name__ == "__main__":
    fallback_executor = FallbackExecutor(func_a, [func_b])
    
    # Example of successful execution
    result = fallback_executor.execute(5)
    print(result)  # Expected output: 15

    # Simulate an error to test the fallback
    try:
        result = fallback_executor.execute('five')
    except ValueError as e:
        pass
    
    print(result)  # Expected output: 10 (from func_b)
```