code: def get_block_height(height, api_code=None):
      
  
      resource = 'block-height/{0}?format=json'.format(height)
      if api_code is not None:
          resource += '&api_code=' + api_code
      response = util.call_api(resource)
      json_response = json.loads(response)
      return [Block(b) for b in json_response['blocks']]
docs: Get an array of blocks at the specified height.
  
      :param int height: block height to look up
      :param str api_code: Blockchain.info API code (optional)
      :return: an array of :class:`Block` objects