"""Create fallback_executor
Generated by Phi-Octopus Eden
2025-11-07 00:16:23.380730
"""

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

class FallbackExecutor:
    """
    A class for creating a fallback mechanism to handle errors gracefully.
    
    Attributes:
        primary_function (Callable): The main function that is expected to execute.
        backup_function (Callable): An optional secondary function to use if the primary fails.
        error_handling_callback (Optional[Callable]): An optional callback function to handle errors.
        
    Methods:
        run: Executes the primary function and handles errors by falling back to the backup function or using a callback.
    """
    
    def __init__(self, 
                 primary_function: Callable,
                 backup_function: Optional[Callable] = None,
                 error_handling_callback: Optional[Callable[[Exception], Any]] = None):
        self.primary_function = primary_function
        self.backup_function = backup_function
        self.error_handling_callback = error_handling_callback
    
    def run(self, *args, **kwargs) -> Any:
        """
        Attempts to execute the primary function with given arguments. If an exception occurs,
        it falls back to either the backup function or uses a provided callback to handle the error.
        
        Args:
            *args: Positional arguments to pass to the primary function.
            **kwargs: Keyword arguments to pass to the primary function.
            
        Returns:
            The result of the executed function, or None if no fallback was possible.
        """
        try:
            return self.primary_function(*args, **kwargs)
        except Exception as e:
            if self.backup_function:
                return self.backup_function(*args, **kwargs)
            elif self.error_handling_callback:
                return self.error_handling_callback(e)
            else:
                raise

# Example usage
def main_function(x):
    """
    A sample function that processes input.
    
    Args:
        x (int): Input number to process.
        
    Returns:
        int: The processed result.
    """
    return 10 // x  # This will fail for x == 0

def backup_function(x):
    """
    An alternative function to handle the failure scenario.
    
    Args:
        x (int): Input number to process in an alternate way.
        
    Returns:
        int: The processed result with a different approach.
    """
    return -1 * x

# Using FallbackExecutor
executor = FallbackExecutor(
    primary_function=main_function,
    backup_function=backup_function
)

result = executor.run(0)  # Should call the backup function since main_function fails for x == 0

print(result)  # Output should be -0 or simply 0, depending on Python version

# Alternatively, with a callback
def error_callback(e: Exception):
    return 100  # Always returns 100 in case of an error

error_executor = FallbackExecutor(
    primary_function=main_function,
    error_handling_callback=partial(error_callback)
)

result = error_executor.run(0)  # Should call the callback since main_function fails for x == 0
print(result)  # Output should be 100
```