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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 decode(slug):
 """ Returns the uuid.UUID object represented by the given v4 or "nice" slug """

    if sys.version_info.major != 2 and isinstance(slug, bytes):
        slug = slug.decode('ascii')
    slug = slug + '=='  # base64 padding
    return uuid.UUID(bytes=base64.urlsafe_b64decode(slug))