"""Create fallback_executor
Generated by Phi-Octopus Eden
2025-11-08 06:31:29.452619
"""

```python
from typing import Callable, Any


class FallbackExecutor:
    """
    A class that provides a mechanism for executing functions with fallbacks in case of errors.
    
    Attributes:
        primary_executor (Callable): The main function to execute.
        secondary_executors (list[Callable]): List of fallback functions, each expected to take the same arguments as `primary_executor`.
        error_handler (Callable, optional): A custom error handler that takes the exception and returns a value to use instead.
    
    Methods:
        run: Executes the primary executor or a fallback if an error occurs.
    """
    
    def __init__(self, primary_executor: Callable[..., Any], secondary_executors: list[Callable[..., Any]], 
                 error_handler: Callable[[Exception], Any] = None):
        self.primary_executor = primary_executor
        self.secondary_executors = secondary_executors
        self.error_handler = error_handler
    
    def run(self, *args, **kwargs) -> Any:
        """
        Executes the primary function. If an exception occurs, tries each fallback in sequence.
        
        Args:
            *args: Positional arguments to pass to the executors.
            **kwargs: Keyword arguments to pass to the executors.
            
        Returns:
            The result of the executed function or the error handler's return value if all fail.
        """
        try:
            return self.primary_executor(*args, **kwargs)
        except Exception as e:
            for fallback in self.secondary_executors:
                try:
                    return fallback(*args, **kwargs)
                except Exception:
                    continue
            if self.error_handler:
                return self.error_handler(e)


# Example usage

def main_function(x: int) -> str:
    """
    Divides x by 2 and returns the result.
    
    Args:
        x (int): Input value to divide by 2.
        
    Returns:
        str: The result as a string.
    """
    return f"Result: {x / 2}"

def fallback1(x: int) -> str:
    """Fallback function that divides x by 3."""
    return f"Fallback 1: {x / 3}"

def fallback2(x: int) -> str:
    """Another fallback function that simply returns a constant string."""
    return "Failing gracefully"

# Create an instance of FallbackExecutor
executor = FallbackExecutor(main_function, [fallback1, fallback2])

# Example calls
print(executor.run(6))  # Should print "Result: 3.0"
print(executor.run(5))  # Should print "Fallback 1: 1.6666666666666667"

def custom_error_handler(exc: Exception) -> str:
    """Custom error handler that returns a predefined message."""
    return f"Custom Error Handler: {str(exc)}"

# Example call with custom error handler
print(executor.run(0, error_handler=custom_error_handler))  # Should print "Custom Error Handler: division by zero"
```