"""Create fallback_executor
Generated by Phi-Octopus Eden
2025-11-07 07:52:27.113356
"""

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


class FallbackExecutor:
    """
    A class for handling function execution with fallback options.
    
    Attributes:
        functions (Dict[str, Callable[..., Any]]): A dictionary mapping names to callable functions.
        fallbacks (Optional[Dict[str, Callable[..., Any]]]): A dictionary of fallback functions corresponding to the primary functions. If a primary function fails, the respective fallback is attempted.
    """
    
    def __init__(self):
        self.functions: Dict[str, Callable[..., Any]] = {}
        self.fallbacks: Optional[Dict[str, Callable[..., Any]]] = None

    def add_function(self, name: str, func: Callable[..., Any]) -> None:
        """Add a function to the executor's list of functions."""
        self.functions[name] = func
        if not self.fallbacks:
            self.fallbacks = {}
    
    def set_fallback(self, name: str, fallback_func: Optional[Callable[..., Any]]) -> None:
        """Set or unset a fallback function for a given primary function."""
        if name in self.functions:
            self.fallbacks[name] = fallback_func
    
    def execute_with_fallback(self, name: str, *args: Any, **kwargs: Any) -> Any:
        """
        Attempt to execute the specified function with arguments.
        
        If an exception is raised during execution, and a corresponding fallback exists,
        the fallback will be executed instead. Otherwise, the exception will propagate.
        
        Args:
            name (str): The name of the function to attempt executing.
            *args: Positional arguments to pass to the function.
            **kwargs: Keyword arguments to pass to the function.
            
        Returns:
            Any: The result of the successful execution or fallback.
        """
        try:
            return self.functions[name](*args, **kwargs)
        except Exception as e:
            if name in self.fallbacks and self.fallbacks[name]:
                print(f"Error executing {name}: {e}. Using fallback.")
                return self.fallbacks[name](*args, **kwargs)
            else:
                raise


# Example usage
def main():
    def division(a: int, b: int) -> float:
        return a / b

    def zero_division_fallback(a: int, b: int) -> str:
        return "Cannot divide by zero. Returning 0."

    executor = FallbackExecutor()
    
    executor.add_function("divide", division)
    executor.set_fallback("divide", zero_division_fallback)
    
    try:
        print(executor.execute_with_fallback("divide", 10, 2))  # Expected: 5.0
        print(executor.execute_with_fallback("divide", 10, 0))  # Expected: "Cannot divide by zero. Returning 0."
    except Exception as e:
        print(f"Error: {e}")


if __name__ == "__main__":
    main()
```