code: def __init__(self):
      self._host = args.host if args.host else "localhost"
      self._port = args.port if args.port else 8086
      self._username = args.username if args.username else None
      self._password = args.password if args.password else None
      self._database = args.database if args.database else "instruments"
      self._ticker = args.ticker
      self._cache = os.path.expanduser(args.sourcepath)
  
      self.dfdb = dfclient(
          self._host,
          self._port,
          self._username,
          self._password,
          self._database,
      )
  
file_path: backtrader/contrib/utils/influxdb-import.py
imports: import sys
  import os
  import io
  import logging
  import argparse
  import pandas
  from influxdb import DataFrameClient
  from influxdb.exceptions import InfluxDBClientError
label_desc: Use image node_id 1 to create a new InfluxDBTool object from inherited base classes: object with example: obj = InfluxDBTool()