"""Create fallback_executor
Generated by Phi-Octopus Eden
2025-11-08 05:15:47.767796
"""

```python
from typing import Callable, Any


class FallbackExecutor:
    """
    A class for creating a fallback mechanism in function execution.
    
    This class is designed to handle situations where a primary function may fail or return an incorrect result,
    and a secondary (fallback) function can be used to provide a valid response.
    
    Attributes:
        primary_function (Callable): The main function that will be attempted first.
        fallback_function (Callable): The backup function that will be executed if the primary fails.
        
    Methods:
        execute: Executes the primary function or falls back to the secondary function based on its success.
    """
    
    def __init__(self, primary_function: Callable, fallback_function: Callable):
        self.primary_function = primary_function
        self.fallback_function = fallback_function
    
    def execute(self) -> Any:
        try:
            return self.primary_function()
        except Exception as e:
            print(f"Primary function failed with error: {e}")
            return self.fallback_function()


# Example Usage

def divide_and_square(x):
    """Divides the input by 2 and squares the result."""
    return (x / 2) ** 2


def safe_divide_and_square(x):
    """Safely divides the input by 2 and squares the result, handling division by zero."""
    if x == 0:
        raise ValueError("Cannot divide by zero")
    return (x / 2) ** 2


fallback_executor = FallbackExecutor(
    primary_function=divide_and_square,
    fallback_function=safe_divide_and_square
)

# Test cases

print(f"Input: 4, Result: {fallback_executor.execute()}")  # Both functions work fine
print(f"Input: 0, Result: {fallback_executor.execute()}")  # Primary function raises an error, fallback used


def raise_error():
    """Function that will always raise an error."""
    raise ValueError("An error occurred")

# Test case with a function that always raises an error

fallback_executor = FallbackExecutor(
    primary_function=raise_error,
    fallback_function=lambda: "Fallback value"
)

print(f"Result when raising an error: {fallback_executor.execute()}")  # Output should be the fallback value
```