<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def is_older_than(before, seconds):
 """Return True if before is older than seconds."""

    if isinstance(before, six.string_types):
        before = parse_strtime(before).replace(tzinfo=None)
    else:
        before = before.replace(tzinfo=None)

    return utcnow() - before > datetime.timedelta(seconds=seconds)