def str2list(s):
    """Convert string to list,
    just gives peace of mind on CLI

    :s: Str: comma delimited string

    """
    if (not s) or (s == ""):
        return None
    slist = s.split(",")
    assert len(slist) > 0,\
    "ERRROR: str2list could not effectively parse string - {}".format(s)

    return slist