"""Create fallback_executor
Generated by Phi-Octopus Eden
2025-11-07 05:41:15.126933
"""

```python
from typing import Any, Callable, Dict, Optional

class FallbackExecutor:
    """
    A class for executing a function with fallback execution in case of errors.
    
    This is useful when you want to attempt an operation and have a backup plan 
    if the initial operation fails. The fallback function will be executed only
    once per call to `execute_with_fallback`.
    """

    def __init__(self, primary_func: Callable[[], Any], fallback_func: Callable[[], Any]):
        """
        Initialize FallbackExecutor with both the primary and fallback functions.

        :param primary_func: The main function to execute.
        :param fallback_func: The function to execute if `primary_func` fails.
        """
        self.primary_func = primary_func
        self.fallback_func = fallback_func
        self.fallback_executed = False

    def execute_with_fallback(self) -> Any:
        """
        Execute the primary function, and if it raises an exception,
        execute the fallback function.

        :return: The result of the executed function.
        :raises Exception: If both functions fail to execute successfully.
        """
        try:
            return self.primary_func()
        except Exception as e:
            if not self.fallback_executed:
                result = self.fallback_func()
                self.fallback_executed = True
                return result
            else:
                raise Exception("Both primary and fallback function failed.") from e

def example_usage():
    """
    Example usage of FallbackExecutor with a simple arithmetic operation.
    """
    
    def divide_by_two(x: int) -> float:
        """Divide by 2."""
        return x / 2
    
    def add_one_to_x(x: int) -> int:
        """Add one to the value and return it, simulating a fallback."""
        return x + 1

    executor = FallbackExecutor(divide_by_two, add_one_to_x)

    try:
        result = executor.execute_with_fallback(2)
        print(f"Result from primary function: {result}")
    except Exception as e:
        print(f"Error occurred during execution of primary function. Error: {e}")

    # This will not be executed because the fallback is only triggered once.
    try:
        result = executor.execute_with_fallback(2)
        print(f"Second attempt - Result from fallback function: {result}")
    except Exception as e:
        print(f"Error occurred during second execution of primary and fallback functions. Error: {e}")

example_usage()
```

This code defines a `FallbackExecutor` class that can be used to wrap two functions, where the first is considered the primary function, and the second serves as a backup in case an exception occurs while executing the primary function. The example usage demonstrates how it might be used in practice with simple arithmetic operations.