code: def summary(date=None, token='', version=''):
      '''https://iexcloud.io/docs/api/#stats-historical-summary
  
      Args:
          token (string); Access token
          version (string); API version
  
      Returns:
          dict: result
      '''
      if date:
          if isinstance(date, str):
              return _getJson('stats/historical?date=' + date, token, version)
          elif isinstance(date, datetime):
              return _getJson('stats/historical?date=' + date.strftime('%Y%m'), token, version)
          else:
              raise PyEXception("Can't handle type : %s" % str(type(date)), token, version)
      return _getJson('stats/historical', token, versionf summary(date=None, token='', version=''):
      '''https://iexcloud.io/docs/api/#stats-historical-summary
  
      Args:
          token (string); Access token
          version (string); API version
  
      Returns:
          dict: result
      '''
      if date:
          if isinstance(date, str):
              return _getJson('stats/historical?date=' + date, token, version)
          elif isinstance(date, datetime):
              return _getJson('stats/historical?date=' + date.strftime('%Y%m'), token, version)
          else:
              raise PyEXception("Can't handle type : %s" % str(type(date)), token, version)
      return _getJson('stats/historical', token, version)
docs: https://iexcloud.io/docs/api/#stats-historical-summary
  
      Args:
          token (string); Access token
          version (string); API version
  
      Returns:
          dict: result