"""Create fallback_executor
Generated by Phi-Octopus Eden
2025-11-06 08:56:03.363076
"""

```python
from typing import Callable, Optional

class FallbackExecutor:
    """
    A class that provides a fallback mechanism for executing functions.
    
    This implementation allows for registering multiple fallback functions,
    and will attempt to execute them in order until one succeeds or all fail.

    Usage example:
    >>> def func_a(x: int) -> str:
    ...     return f"Result from A: {x * 2}"
    ...
    >>> def func_b(x: int) -> str:
    ...     return f"Result from B: {x + 10}"
    ...
    >>> fallback_executor = FallbackExecutor()
    >>> result = fallback_executor.execute_with_fallback(func_a, (5,), {"fallbacks": [func_b]})
    >>> print(result)
    "Result from A: 10"
    
    :param fallbacks: List of fallback functions to try in order.
    """
    
    def __init__(self):
        self.fallbacks = []

    def register_fallback(self, func: Callable) -> None:
        """
        Register a function as a fallback.

        :param func: A callable that takes the same arguments as the main function and returns the same type.
        """
        self.fallbacks.append(func)

    def execute_with_fallback(self, func: Callable, args: tuple, kwargs: Optional[dict] = None) -> str:
        """
        Execute the given function with provided arguments. If it fails, try each registered fallback.

        :param func: The main function to attempt execution.
        :param args: Positional arguments to pass to the functions.
        :param kwargs: Keyword arguments to pass to the functions.
        
        :return: Result of the first successful function execution or an error message if all fail.
        """
        result = None
        try:
            result = func(*args, **kwargs)
        except Exception as e:
            print(f"Main function failed: {e}")
            
        for fallback in self.fallbacks:
            try:
                return fallback(*args, **kwargs)
            except Exception as e:
                print(f"Fallback function {fallback} failed: {e}")

        if result is None:
            raise ValueError("All functions have failed.")

# Example usage
def main_function(x: int) -> str:
    """Example main function that may fail."""
    return f"Main result: {x * 3}"

def fallback_function_1(x: int) -> str:
    """First fallback function to attempt."""
    return f"Fallback 1 result: {x + 50}"

def fallback_function_2(x: int) -> str:
    """Second fallback function if the first one fails."""
    return f"Fallback 2 result: {x * 7}"

fallback_executor = FallbackExecutor()
fallback_executor.register_fallback(fallback_function_1)
fallback_executor.register_fallback(fallback_function_2)

try:
    main_result = main_function(5)  # Assume this function fails for demonstration
except ValueError as e:
    print(e)  # This will trigger fallback execution

main_result = main_executor.execute_with_fallback(main_function, (5,))
print(main_result)
```