"""Create fallback_executor
Generated by Phi-Octopus Eden
2025-11-07 22:23:50.612917
"""

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


class FallbackExecutor:
    """
    A class that provides a fallback mechanism for executing functions.
    
    If the primary function fails due to an error, it will attempt to execute
    one or more fallback functions until successful or no fallbacks are left.
    """

    def __init__(self):
        self.fallbacks: list[Callable] = []
        self.primary_function: Optional[Callable] = None

    def add_fallback(self, func: Callable) -> None:
        """
        Adds a fallback function to the executor.

        :param func: A callable function.
        """
        self.fallbacks.append(func)

    def set_primary(self, primary_func: Callable) -> None:
        """
        Sets the primary function that will be attempted first before falling back.

        :param primary_func: The main callable function.
        """
        self.primary_function = primary_func

    def execute(self, *args, **kwargs) -> Any:
        """
        Attempts to execute the primary function or a fallback if it fails.

        :param args: Arguments for the functions.
        :param kwargs: Keyword arguments for the functions.
        :return: The result of the successfully executed function or None.
        """
        try:
            return self.primary_function(*args, **kwargs)
        except Exception as e:
            print(f"Primary function failed with error: {e}")
            if not self.fallbacks:
                print("No fallback functions available.")
                return None

            for func in self.fallbacks:
                try:
                    result = func(*args, **kwargs)
                    print(f"Fallback function '{func.__name__}' executed successfully.")
                    return result
                except Exception as fe:
                    print(f"Fallback function '{func.__name__}' failed with error: {fe}")

            print("All fallback functions failed.")
            return None


# Example Usage:

def primary_operation(num):
    """
    A sample primary operation that may fail.
    """
    import random
    if random.random() < 0.5:
        raise ValueError("Primary function failed due to some condition")
    return f"Primary operation executed with {num}"


def fallback1(num):
    """
    First fallback operation.
    """
    return f"Fallback 1 executed with {num}"

def fallback2(num):
    """
    Second fallback operation.
    """
    return f"Fallback 2 executed with {num}"


# Initialize the executor
executor = FallbackExecutor()

# Set the primary function
executor.set_primary(primary_operation)

# Add fallback functions
executor.add_fallback(fallback1)
executor.add_fallback(fallback2)

# Execute the primary and fallbacks
result = executor.execute(42)  # This may use a fallback or succeed directly

print(result)
```