class_docstr: Handler for files
class_docstr_tok: ["Handler","for","files"]
code: def is_it_csv(data_str: StringIO) -> bool:
      sample = data_str.readline()  # trying to get dialect from header
      data_str.seek(0)
      try:
          csv.Sniffer().sniff(sample)
          # Avoid a false-positive for json files
          try:
              json.loads(data_str.read())
              data_str.seek(0)
              return False
          except json.decoder.JSONDecodeError:
              data_str.seek(0)
              return True
      except Exception:
          return False
  
imports: import codecs
  import csv
  import json
  import os
  import tempfile
  import traceback
  from io import BytesIO, StringIO
  from pathlib import Path
  from urllib.parse import urlparse
  import magic
  import pandas
  import requests
  from charset_normalizer import from_bytes
  from mindsdb_sql import parse_sql
  from mindsdb_sql.parser.ast import DropTables, Select
  from mindsdb_sql.parser.ast.base import ASTNode
  from langchain.text_splitter import RecursiveCharacterTextSplitter
  from langchain.document_loaders import TextLoader
  from mindsdb.api.executor.utilities.sql import query_df
  from mindsdb.integrations.libs.base import DatabaseHandler
  from mindsdb.integrations.libs.response import RESPONSE_TYPE
  from mindsdb.integrations.libs.response import HandlerResponse
  from mindsdb.integrations.libs.response import HandlerStatusResponse
  from mindsdb.utilities import log
label_desc: Use image node_id 11 for calling the FileHandler obj's underlying member method code with example usage: obj.is_it_csv(data_str) and returns: False, False, True