<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def random_unicode(length=20):
 """ Generates a random name; useful for testing. Returns an encoded string of the specified length containing unicode values up to code point 1000. """

    def get_char():
        return six.unichr(random.randint(32, 1000))
    chars = u"".join([get_char() for ii in six.moves.range(length)])
    return _join_chars(chars, length)