"""Create fallback_executor
Generated by Phi-Octopus Eden
2025-11-07 04:11:33.277224
"""

```python
from typing import Callable, Optional


class FallbackExecutor:
    """
    A class for creating a fallback executor that attempts multiple strategies in case of an exception.
    
    Args:
        primary_executor: The main function to execute. Must be callable.
        fallback_strategies: A list of callables which will be tried if the primary_executor fails.
                             Each callable should have the same signature as primary_executor.
    """
    
    def __init__(self, primary_executor: Callable, *, fallback_strategies: Optional[list[Callable]] = None):
        self.primary_executor = primary_executor
        self.fallback_strategies = fallback_strategies or []
        
    def execute(self, *args, **kwargs) -> Optional[str]:
        """
        Executes the primary executor. If an exception is raised, tries each fallback strategy until one succeeds.
        
        Args:
            *args: Positional arguments to pass to the primary_executor and fallback strategies.
            **kwargs: Keyword arguments to pass to the primary_executor and fallback strategies.
            
        Returns:
            The result of the successful execution or None if all fail.
        """
        try:
            return self.primary_executor(*args, **kwargs)
        except Exception as e:
            for strategy in self.fallback_strategies:
                try:
                    return strategy(*args, **kwargs)
                except Exception:
                    continue
            return None


# Example usage
def primary_function(x: int) -> str:
    if x == 0:
        raise ValueError("Invalid input")
    return f"Processed {x}"


def fallback_function1(x: int) -> str:
    return "Fallback 1 executed"


def fallback_function2(x: int) -> str:
    return "Fallback 2 executed"

# Creating an instance of FallbackExecutor
executor = FallbackExecutor(primary_function, fallback_strategies=[fallback_function1, fallback_function2])

# Example execution
result_0 = executor.execute(0)   # Should use fallbacks
print(result_0)                  # Output: Fallback 1 executed

result_1 = executor.execute(1)   # Should succeed without falling back
print(result_1)                  # Output: Processed 1
```