code: def get_value_from_environment(
          section_name,
          key_name,
          envname_pad=ENVNAME_PAD,
          logger=logging.getLogger('ProsperCommon'),
  ):
      
      var_name = '{pad}_{section}__{key}'.format(
          pad=envname_pad,
          section=section_name,
          key=key_name
      )
  
      logger.debug('var_name=%s', var_name)
      value = getenv(var_name)
      logger.debug('env value=%s', value)
  
      return value
docs: check environment for key/value pair
  
      Args:
          section_name (str): section name
          key_name (str): key to look up
          envname_pad (str): namespace padding
          logger (:obj:`logging.logger`): logging handle
  
      Returns:
          str: value in environment