"""Create fallback_executor
Generated by Phi-Octopus Eden
2025-11-07 19:34:31.986257
"""

```python
from typing import Callable, Any


class FallbackExecutor:
    """
    A class for executing a function with fallback execution in case of errors.
    
    Parameters:
        main_executor (Callable): The primary function to execute.
        fallback_executor (Callable): The function to execute if the main_executor fails.
        
    Methods:
        run: Execute the main function and handle exceptions by running the fallback function.
    """
    
    def __init__(self, main_executor: Callable, fallback_executor: Callable):
        self.main_executor = main_executor
        self.fallback_executor = fallback_executor
    
    def run(self) -> Any:
        """
        Run the main executor. If an exception occurs, call the fallback executor.
        
        Returns:
            The result of the successful execution or None if both fail.
        """
        try:
            return self.main_executor()
        except Exception as e:
            print(f"Error occurred: {e}")
            try:
                return self.fallback_executor()
            except Exception:
                print("Fallback execution failed.")
                return None


# Example usage
def divide(a: float, b: float) -> float:
    """Divide two numbers."""
    return a / b

def safe_divide(a: float, b: float) -> float:
    """Safe division with fallback to integer division if divisor is zero."""
    try:
        return a // b
    except ZeroDivisionError:
        print("Attempted division by zero. Using integer division instead.")
        return int(a / max(b, 1e-10))


# Create executors
main_executor = divide
fallback_executor = safe_divide

executor = FallbackExecutor(main_executor, fallback_executor)

# Test with valid input
result = executor.run(20, 5)
print(result)  # Expected output: 4.0

# Test with invalid input (division by zero)
result = executor.run(10, 0)
print(result)  # Expected output: Attempted division by zero. Using integer division instead. 0
```