"""Create fallback_executor
Generated by Phi-Octopus Eden
2025-11-07 13:13:26.182808
"""

```python
class FallbackExecutor:
    """
    A class that provides a fallback mechanism for executing functions in case of errors.

    Attributes:
        default_func (Callable): The function to be executed if an error occurs.
        fallbacks (List[Callable]): List of fallback functions to try in the order they are listed after the first failure.

    Methods:
        execute: Attempts to execute the primary function. If it fails, tries each fallback until successful or out of options.
    """

    def __init__(self, default_func: Callable[[Any], Any], *fallbacks: Callable[[Any], Any]):
        """
        Initializes the FallbackExecutor with a default function and its fallbacks.

        :param default_func: The primary function to attempt execution first.
        :param fallbacks: A variable number of fallback functions in order of priority.
        """
        self.default_func = default_func
        self.fallbacks = list(fallbacks)

    def execute(self, input_data: Any) -> Any:
        """
        Attempts to execute the primary function with given input. If it fails,
        tries each fallback until a successful execution or exhausts all options.

        :param input_data: The data/input required for the functions.
        :return: The result of the successfully executed function or None if no success.
        """
        func_to_execute = self.default_func
        for i in range(len(self.fallbacks) + 1):
            try:
                return func_to_execute(input_data)
            except Exception as e:
                if i < len(self.fallbacks):
                    func_to_execute = self.fallbacks[i]
                else:
                    return None

# Example usage:

def add(a: int, b: int) -> int:
    """Adds two numbers."""
    return a + b

def subtract(a: int, b: int) -> int:
    """Subtracts second number from the first."""
    return a - b

def multiply(a: int, b: int) -> int:
    """Multiplies two numbers."""
    return a * b

# Creating FallbackExecutor instance with default and fallback functions
executor = FallbackExecutor(add, subtract, multiply)

# Test execution with different types of input and errors
print(executor.execute(10, 5))  # Should print 15 (add)
try:
    executor.execute('a', 'b')  # Raises TypeError because add can't handle strings
except TypeError:
    pass

print(executor.execute(10, 5))  # Should still be 15 (no change in fallbacks)

# Simulate failure and use the next function in line as fallback
try:
    executor.fallbacks[0](10, 'b')  # Raises TypeError for subtract
except TypeError:
    pass

print(executor.execute(10, 5))  # Should now try subtract, then multiply before failing
```