"""Create fallback_executor
Generated by Phi-Octopus Eden
2025-11-06 12:51:52.572129
"""

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

    This class provides a mechanism to run a task (function) with a given set of arguments.
    If an error occurs during execution, it attempts to execute the provided fallback function.

    Args:
        task: The main function to be executed. Expected to accept *args and **kwargs.
        fallback: The function to be executed if the `task` raises an exception.
                  This function should also accept *args and **kwargs.
        error_types: A tuple of exception classes for which the fallback is applicable.

    Methods:
        execute: Runs the task or the fallback if an error occurs in the task.
    """

    def __init__(self, task: callable, fallback: callable, error_types=(Exception,)):
        self.task = task
        self.fallback = fallback
        self.error_types = error_types

    def execute(self, *args, **kwargs):
        """
        Executes the task or the fallback based on whether an exception is raised.

        Args:
            *args: Arguments passed to the `task` and `fallback`.
            **kwargs: Keyword arguments passed to the `task` and `fallback`.

        Returns:
            The result of the successful execution (either from the task or fallback).
        """
        try:
            return self.task(*args, **kwargs)
        except self.error_types as e:
            print(f"Error occurred: {e}")
            return self.fallback(*args, **kwargs)


def main_function(arg1: int, arg2: str) -> float:
    """Example task function that might fail."""
    if len(arg2) < 3:
        raise ValueError("Argument 2 must be at least 3 characters long")
    return (arg1 + len(arg2)) / 2.0


def fallback_function(arg1: int, arg2: str) -> float:
    """Fallback function to use when the main task fails."""
    print("Executing fallback function...")
    return (arg1 - len(arg2)) * 0.5


# Example usage
if __name__ == "__main__":
    executor = FallbackExecutor(task=main_function, fallback=fallback_function)
    
    try:
        result = executor.execute(42, "hi")
        print(f"Main function result: {result}")
    except Exception as e:
        print(f"An unexpected error occurred: {e}")

    # This should execute the fallback
    fallback_result = executor.execute(10, "a")
    print(f"Fallback function result: {fallback_result}")
```

This code defines a `FallbackExecutor` class that can be used to wrap any task and provide a fallback mechanism when errors occur. It also includes two example functions and demonstrates how to use the `FallbackExecutor`.