"""Create fallback_executor
Generated by Phi-Octopus Eden
2025-11-08 20:44:17.039209
"""

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


class FallbackExecutor:
    """
    A class for creating a fallback execution mechanism that can handle errors by falling back to alternative functions.
    
    Attributes:
        primary_function (Callable): The primary function to be executed with the possibility of error.
        fallback_functions (List[Callable]): List of fallback functions to be attempted in case the primary function fails.
        exception_types (List[type]): Exception types for which fallbacks should be triggered. If empty, all exceptions are caught.

    Methods:
        execute: Executes the primary function and handles errors by calling a fallback if necessary.
    """
    
    def __init__(self, primary_function: Callable, *, fallback_functions: Optional[List[Callable]] = None,
                 exception_types: Optional[List[type]] = None):
        self.primary_function = primary_function
        self.fallback_functions = fallback_functions or []
        self.exception_types = exception_types or [Exception]
    
    def execute(self, *args, **kwargs) -> Any:
        """
        Executes the primary function and handles errors by calling a fallback if necessary.
        
        Args:
            *args: Positional arguments to pass to the functions.
            **kwargs: Keyword arguments to pass to the functions.

        Returns:
            The result of the executed function or None in case of failure without a fallback.

        Raises:
            Any exception not handled by the fallbacks, unless explicitly caught and returned as None.
        """
        
        for func in [self.primary_function] + self.fallback_functions:
            try:
                return func(*args, **kwargs)
            except Exception as e:
                if not any(isinstance(e, et) for et in self.exception_types):
                    raise
```

# Example usage
```python
def primary_operation(x: int, y: int) -> int:
    """Primary operation that might fail due to unexpected inputs."""
    return x / y

def fallback1(x: int, y: int) -> int:
    """Fallback function 1 that handles division by zero gracefully."""
    print("Falling back to fallback1")
    return x // (y + 1)

def fallback2(x: int, y: int) -> int:
    """Fallback function 2 that provides a default value in case of failure."""
    print("Falling back to fallback2")
    return x * 2

# Creating an instance with primary and fallback functions
executor = FallbackExecutor(primary_operation, fallback_functions=[fallback1, fallback2], exception_types=[ZeroDivisionError])

# Attempting execution (should be fine)
print(executor.execute(10, 2))  # Output: 5

# Attempting execution that triggers a fallback (division by zero)
print(executor.execute(10, 0))  # Output: Falling back to fallback1; 4
```
```