"""Create fallback_executor
Generated by Phi-Octopus Eden
2025-11-06 15:19:55.834884
"""

```python
from typing import Callable, Any


class FallbackExecutor:
    """
    A class that provides a fallback mechanism for executing functions. If an exception occurs during the execution,
    it attempts to execute a fallback function.
    
    :param primary_function: The primary function to be executed.
    :param fallback_function: The fallback function to be executed in case of failure.
    """

    def __init__(self, primary_function: Callable[[], Any], fallback_function: Callable[[], Any]):
        self.primary_function = primary_function
        self.fallback_function = fallback_function

    def execute(self) -> Any:
        """
        Executes the primary function. If an exception occurs, attempts to execute the fallback function.
        
        :return: The result of the successfully executed function or None if both failed.
        """
        try:
            return self.primary_function()
        except Exception as e:
            print(f"Primary execution failed with error: {e}")
            try:
                return self.fallback_function()
            except Exception as fe:
                print(f"Fallback execution failed with error: {fe}")
                return None


# Example usage

def primary_data_retrieval() -> str:
    """
    Simulates data retrieval from a potentially unreliable source.
    
    :return: A string representing the retrieved data.
    """
    import random
    if random.random() < 0.5:
        raise ValueError("Failed to retrieve data")
    return "Data successfully retrieved"

def fallback_data_retrieval() -> str:
    """
    Simulates a backup method for retrieving data in case of failure.
    
    :return: A string representing the fallback data retrieval result.
    """
    return "Fallback data retrieved"


# Creating instances
primary = primary_data_retrieval
fallback = fallback_data_retrieval

executor = FallbackExecutor(primary, fallback)

# Execute and print results
result = executor.execute()
print(result)
```