Update tool.py

tool.py

@@ -6,6 +6,15 @@ from langchain_community.document_loaders.arxiv import ArxivLoader
 from langchain_community.document_loaders.pubmed import PubMedLoader
 from typing import Optional
 
+import os
+import tempfile
+import requests
+from urllib.parse import urlparse
+import pytesseract
+from PIL import Image
+import pandas as pd
+import uuid
+
 ## Simple algebra tools
 @tool
 def add(a: float, b: float) -> float: