code: def get_environ(cls, prefix):
          
          return ((key[len(prefix) + 1:], value)
                  for key, value in os.environ.items()
                  if key.startswith('%s_' % prefix))
docs: Retrieves environment variables from a namespace.
  
          Args:
              prefix (str): The prefix, without a trailing underscore.
  
          Returns:
              list: A list of environment variable keys and values.