code: import pandas as pd
  import xlrd
  
  class xlsFetcher(object):
      """
      xlsFetcher: fetches xls files
      """
  
      def __init__(self):
          self.flag_final = True
  
      def parse_xls(self, url):
          """
          parses data from url to dataframe
  
          PARAMETERS:
          -----------
          url: String
              data id based link
  
          RETURNS:
  	    -----------
          DataFrame: data for url
          """
          try:
              df = pd.read_excel(url, sheet_name=None)
              return df
          except:
              self.flag_final = False
              return pd.DataFrame()
  
      def load_data(self, url):
          """
          function to load data set
  
          PARAMETERS:
  	    -----------
          url: String
  			data id based link
  
          RETURNS:
  	    -----------
          DataFrame: data for url
          Boolean: flag_final (true if success)
          """
          return self.parse_xls(url), self.flag_final
  
apis: pandas.read_excel pandas.DataFrame