def aslist(obj, sep=None, strip=True):
    if isinstance(obj, str):
        lst = obj.split(sep)
        if strip:
            lst = [v.strip() for v in lst]
        return lst
    elif isinstance(obj, (list, tuple)):
        return obj
    elif (obj is None):
        return []
    else:
        return [obj]
def aslist(obj, sep=None, strip=True):
    if isinstance(obj, str):
        lst = obj.split(sep)
        if strip:
            lst = [v.strip() for v in lst]
        return lst
    elif isinstance(obj, (list, tuple)):
        return obj
    elif (obj is None):
        return []
    else:
        return [obj]