"""Create fallback_executor
Generated by Phi-Octopus Eden
2025-11-07 02:58:59.422080
"""

```python
from typing import Callable, Any, Union
from functools import wraps

class FallbackExecutor:
    """
    A class that provides a mechanism for executing functions with fallbacks in case of errors.
    
    Attributes:
        primary_executor (Callable[..., Any]): The main function to execute.
        fallback_executors (dict[int, Callable[..., Any]]): Dictionary mapping error codes to their respective fallback functions.
        
    Methods:
        add_fallback(error_code: int, fallback_func: Callable[..., Any])
            Adds a fallback function for a specific error code.
        execute(func: Callable[..., Any])
            Executes the primary executor and handles errors by executing appropriate fallbacks.
    """
    
    def __init__(self):
        self.fallback_executors = {}
        
    def add_fallback(self, error_code: int, fallback_func: Callable[..., Any]):
        """
        Adds a fallback function for a specific error code.

        Args:
            error_code (int): The error code to associate with the fallback function.
            fallback_func (Callable[..., Any]): The fallback function to execute if the primary executor raises an error with the specified error code.
        
        Raises:
            ValueError: If the provided error_code is negative.
        """
        if error_code < 0:
            raise ValueError("Error codes must be non-negative.")
        self.fallback_executors[error_code] = fallback_func
    
    def execute(self, func: Callable[..., Any]):
        """
        Executes the primary executor and handles errors by executing appropriate fallbacks.

        Args:
            func (Callable[..., Any]): The main function to attempt execution.
        
        Returns:
            Any: The result of the executed function or the fallback if an error occurs.
        """
        @wraps(func)
        def wrapper(*args, **kwargs):
            try:
                return func(*args, **kwargs)
            except Exception as e:
                for code, fallback in self.fallback_executors.items():
                    if isinstance(e, code):  # Assuming we have a way to detect the error type by its code
                        return fallback(*args, **kwargs)
        return wrapper

# Example usage
def main_function(x: int) -> int:
    """
    A sample function that may raise an error.
    
    Args:
        x (int): The input integer.

    Returns:
        int: The result of the operation or a fallback value if an error occurs.
    """
    return 1 / x

def fallback_divide_by_zero(x: int) -> int:
    """
    A function to handle division by zero errors.
    
    Args:
        x (int): The input integer.

    Returns:
        int: A fallback result when a ZeroDivisionError is encountered.
    """
    print("Caught an error, handling it...")
    return 0

def main():
    executor = FallbackExecutor()
    executor.add_fallback(ZeroDivisionError, fallback_divide_by_zero)
    
    # Try to use the wrapped function
    result = executor.execute(main_function)(1)  # Should succeed
    print(f"Result: {result}")
    
    result = executor.execute(main_function)(0)  # Should trigger fallback
    print(f"Result: {result}")

if __name__ == "__main__":
    main()
```

This example demonstrates a basic `FallbackExecutor` class that can add and execute functions with specified error codes. It also includes an example usage where division by zero is handled via a fallback function.