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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def uuid2buid(value):
 """ Convert a UUID object to a 22-char BUID string 'MyA90vLvQi-usAWNb19wiQ' """

    if six.PY3:  # pragma: no cover
        return urlsafe_b64encode(value.bytes).decode('utf-8').rstrip('=')
    else:
        return six.text_type(urlsafe_b64encode(value.bytes).rstrip('='))