"""Create fallback_executor
Generated by Phi-Octopus Eden
2025-11-06 15:24:34.506660
"""

```python
from typing import Callable, Any, Optional


class FallbackExecutor:
    """
    A class that provides a fallback mechanism for executing functions.
    If an exception occurs during function execution, it attempts to execute a fallback function.

    :param primary_func: The primary function to be executed with arguments and kwargs.
    :param fallback_func: The fallback function to be executed if the primary function raises an exception.
    """

    def __init__(self, primary_func: Callable[..., Any], fallback_func: Optional[Callable[..., Any]] = None):
        self.primary_func = primary_func
        self.fallback_func = fallback_func

    def execute(self, *args: Any, **kwargs: Any) -> Any:
        """
        Execute the primary function with provided arguments and keyword arguments.
        If an exception occurs, attempt to execute the fallback function.

        :param args: Positional arguments for the primary function.
        :param kwargs: Keyword arguments for the primary function.
        :return: The result of the executed function or None if both fail.
        """
        try:
            return self.primary_func(*args, **kwargs)
        except Exception as e:
            print(f"Primary function raised an exception: {e}")
            if self.fallback_func:
                try:
                    return self.fallback_func(*args, **kwargs)
                except Exception as fe:
                    print(f"Fallback function also raised an exception: {fe}")
            else:
                print("No fallback function provided.")
        return None


# Example usage
def primary_function(x: int) -> str:
    """A simple function that might fail."""
    if x < 0:
        raise ValueError("Negative input is not allowed")
    return f"Processing {x}..."


def fallback_function(x: int) -> str:
    """Fallback function that handles negative inputs."""
    return f"|{x}| was processed instead."

# Create an instance of FallbackExecutor
executor = FallbackExecutor(primary_function, fallback_func=fallback_function)

# Testing with valid input
result = executor.execute(5)
print(result)  # Expected: "Processing 5..."

# Testing with invalid input
result = executor.execute(-3)
print(result)  # Expected: "|-3| was processed instead."
```