"""Create fallback_executor
Generated by Phi-Octopus Eden
2025-11-06 14:30:30.651240
"""

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


class FallbackExecutor:
    """
    A class to handle function execution with a fallback mechanism in case of errors.

    Attributes:
        functions (Dict[str, Callable[..., Any]]): Dictionary containing the functions and their names.
        default_value: The value returned if all fallbacks fail. Default is None.
    """

    def __init__(self, functions: Dict[str, Callable[..., Any]], default_value: Optional[Any] = None):
        """
        Initialize FallbackExecutor with a dictionary of functions.

        Args:
            functions (Dict[str, Callable[..., Any]]): Dictionary containing the functions and their names.
            default_value (Optional[Any]): The value returned if all fallbacks fail. Default is None.
        """
        self.functions = functions
        self.default_value = default_value

    def execute_with_fallback(self, function_name: str, *args, **kwargs) -> Any:
        """
        Execute the specified function with provided arguments and handle errors using fallbacks.

        Args:
            function_name (str): The name of the function to be executed.
            args: Positional arguments for the function.
            kwargs: Keyword arguments for the function.

        Returns:
            Any: The result of the successful execution or default_value if all attempts fail.
        """
        functions_list = list(self.functions.items())
        
        while functions_list:
            func_name, func = functions_list.pop(0)
            try:
                print(f"Attempting to execute {func_name} with args={args} and kwargs={kwargs}")
                return func(*args, **kwargs)
            except Exception as e:
                print(f"{func_name} failed: {e}")

        return self.default_value


# Example usage
def add(a: int, b: int) -> int:
    """Add two numbers."""
    return a + b

def subtract(a: int, b: int) -> int:
    """Subtract one number from another."""
    return a - b

fallback_executor = FallbackExecutor(functions={"add": add, "subtract": subtract})

# Assuming we want to perform addition
result = fallback_executor.execute_with_fallback("add", 10, 5)
print(f"Result: {result}")

# Simulate an error by removing the 'add' function from consideration and trying subtraction instead
functions_list = list(fallback_executor.functions.items())
functions_list.remove(("add", add))

fallback_executor.functions = dict(functions_list)

try:
    result = fallback_executor.execute_with_fallback("subtract", 10, 5)
    print(f"Result: {result}")
except Exception as e:
    print(f"Fallback failed with error: {e}")

# Simulate an error where all functions fail
fallback_executor.functions.clear()

try:
    result = fallback_executor.execute_with_fallback("nonexistent_function", 10, 5)
    print(f"Result: {result}")
except Exception as e:
    print(f"All fallbacks failed with error: {e}")
```