<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def _get_suffix(path):
 """ Return suffix from `path`. ``/home/xex/somefile.txt`` --> ``txt``. Args: path (str):
 Full file path. Returns: str: Suffix. Raises: UserWarning: When ``/`` is detected in suffix. """

    suffix = os.path.basename(path).split(".")[-1]

    if "/" in suffix:
        raise UserWarning("Filename can't contain '/' in suffix (%s)!" % path)

    return suffix