code: def iexSymbolsDF(token='', version=''):
      '''This call returns an array of symbols the Investors Exchange supports for trading.
      This list is updated daily as of 7:45 a.m. ET. Symbols may be added or removed by the Investors Exchange after the list was produced.
  
      https://iexcloud.io/docs/api/#iex-symbols
      8am, 9am, 12pm, 1pm UTC daily
  
      Args:
          token (string); Access token
          version (string); API version
  
      Returns:
          DataFrame: result
      '''
      df = pd.DataFrame(iexSymbols(token, version))
      _toDatetime(df)
      _reindex(df, 'symbol')
      return df iexSymbolsDF(token='', version=''):
      '''This call returns an array of symbols the Investors Exchange supports for trading.
      This list is updated daily as of 7:45 a.m. ET. Symbols may be added or removed by the Investors Exchange after the list was produced.
  
      https://iexcloud.io/docs/api/#iex-symbols
      8am, 9am, 12pm, 1pm UTC daily
  
      Args:
          token (string); Access token
          version (string); API version
  
      Returns:
          DataFrame: result
      '''
      df = pd.DataFrame(iexSymbols(token, version))
      _toDatetime(df)
      _reindex(df, 'symbol')
      return df
docs: This call returns an array of symbols the Investors Exchange supports for trading.
      This list is updated daily as of 7:45 a.m. ET. Symbols may be added or removed by the Investors Exchange after the list was produced.
  
      https://iexcloud.io/docs/api/#iex-symbols
      8am, 9am, 12pm, 1pm UTC daily
  
      Args:
          token (string); Access token
          version (string); API version
  
      Returns:
          DataFrame: result