tools/polite_guard.py

from typing import Any, Optional
from smolagents.tools import Tool
from transformers import pipeline


class PoliteGuardTool(Tool):
    """Wrapper around a text tool that classifies text into politeness categories.
    Args:
        input_text: A string of English text.
    """
    name = "polite_guard"
    description = "Calls an tool to classifify text by 4 labels from polite to impolite"
    inputs = {'input_text': {'type': 'any', 'description': 'Enter text for assessing whether it is respectful'}}
    output_type = "any"

    def forward(self, input_text: Any) -> Any:
        self.label = self.ask_polite_guard(input_text)
        return self.label 
           
    def __init__(self, *args, **kwargs):
        self.is_initialized = False
        self.label = None
        self.score = None
        
    #@tool
    def ask_polite_guard(self, input_text: str) -> str:
        """ 
    
        Args:
            input_text: The text to classify.

        Returns:
            string with classification label
        """
        try:
            classifier = pipeline("text-classification", "Intel/polite-guard")
            return classifier(input_text)
            
        except Exception as e:
            return f"Error fetching classification for text '{input_text}': {str(e)}"