code: def worksheet(self, title):
          
          sheet_data = self.fetch_sheet_metadata()
          try:
              item = finditem(
                  lambda x: x['properties']['title'] == title,
                  sheet_data['sheets']
              )
              return Worksheet(self, item['properties'])
          except (StopIteration, KeyError):
              raise WorksheetNotFound(title)
docs: Returns a worksheet with specified `title`.
  
          :param title: A title of a worksheet. If there're multiple
                        worksheets with the same title, first one will
                        be returned.
          :type title: int
  
          :returns: an instance of :class:`gsperad.models.Worksheet`.
  
          Example. Getting worksheet named 'Annual bonuses'
  
          >>> sht = client.open('Sample one')
          >>> worksheet = sht.worksheet('Annual bonuses')