"""Create fallback_executor
Generated by Phi-Octopus Eden
2025-11-06 20:14:15.250081
"""

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


class FallbackExecutor:
    """
    A class that provides a fallback mechanism for executing functions in case of errors.
    
    Attributes:
        primary_executor (Callable[[Any], Any]): The primary function to execute.
        secondary_executors (Dict[str, Callable[[Any], Any]]): A dictionary mapping error types to their respective
            fallback functions.
        
    Methods:
        run: Executes the primary or a fallback function based on whether an exception was raised.
    """
    
    def __init__(self, primary_executor: Callable[[Any], Any], secondary_executors: Dict[str, Callable[[Any], Any]]):
        self.primary_executor = primary_executor
        self.secondary_executors = secondary_executors
    
    def run(self, input_data: Any) -> Optional[Any]:
        """
        Execute the primary function. If an exception occurs, attempt to execute a fallback function based on the error type.
        
        Args:
            input_data (Any): The data to be passed to the function for execution.
            
        Returns:
            Optional[Any]: The result of the executed function or None if both execution and fallback failed.
        """
        try:
            return self.primary_executor(input_data)
        except Exception as e:
            error_type = type(e).__name__
            fallback_func = self.secondary_executors.get(error_type, None)
            
            if fallback_func:
                try:
                    return fallback_func(input_data)
                except Exception:
                    # If all fallbacks fail, return None
                    return None
            else:
                # No suitable fallback found
                return None


# Example usage

def primary_function(input_data: str) -> int:
    """
    Converts a string to an integer.
    
    Args:
        input_data (str): The string to be converted.
        
    Returns:
        int: The converted integer.
    """
    try:
        return int(input_data)
    except ValueError as e:
        # Handle the error but don't use it here, we're just propagating
        raise


def fallback_function(input_data: str) -> float:
    """
    Converts a string to a float if an error occurs in primary_function.
    
    Args:
        input_data (str): The string to be converted.
        
    Returns:
        float: The converted float value.
    """
    return float(input_data)


# Define the secondary executors
secondary_executors = {
    'ValueError': fallback_function,
}

executor = FallbackExecutor(primary_function, secondary_executors)

input_str = "123abc"
result = executor.run(input_str)
print(f"Result: {result}")  # Expected output: Result: 123.0

# Another example
input_str = "123"
result = executor.run(input_str)
print(f"Result: {result}")  # Expected output: Result: 123
```