code: def securityEventDF(symbol=None, token='', version=''):
      '''The Security event message is used to indicate events that apply to a security. A Security event message will be sent whenever such event occurs
  
      https://iexcloud.io/docs/api/#deep-security-event
  
      Args:
          symbol (string); Ticker to request
          token (string); Access token
          version (string); API version
  
      Returns:
          DataFrame: result
      '''
      x = securityEvent(symbol, token, version)
      data = []
      for key in x:
          d = x[key]
          d['symbol'] = key
          data.append(d)
      df = pd.DataFrame(data)
      _toDatetime(df)
      return df securityEventDF(symbol=None, token='', version=''):
      '''The Security event message is used to indicate events that apply to a security. A Security event message will be sent whenever such event occurs
  
      https://iexcloud.io/docs/api/#deep-security-event
  
      Args:
          symbol (string); Ticker to request
          token (string); Access token
          version (string); API version
  
      Returns:
          DataFrame: result
      '''
      x = securityEvent(symbol, token, version)
      data = []
      for key in x:
          d = x[key]
          d['symbol'] = key
          data.append(d)
      df = pd.DataFrame(data)
      _toDatetime(df)
      return df
docs: The Security event message is used to indicate events that apply to a security. A Security event message will be sent whenever such event occurs
  
      https://iexcloud.io/docs/api/#deep-security-event
  
      Args:
          symbol (string); Ticker to request
          token (string); Access token
          version (string); API version
  
      Returns:
          DataFrame: result