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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 detect_namespace(rdf):
 """Try to automatically detect the URI namespace of the vocabulary. Return namespace as URIRef. """


    # pick a concept
    conc = rdf.value(None, RDF.type, SKOS.Concept, any=True)
    if conc is None:
        logging.critical(
            "Namespace auto-detection failed. "
            "Set namespace using the --namespace option.")
        sys.exit(1)

    ln = localname(conc)
    ns = URIRef(conc.replace(ln, ''))
    if ns.strip() == '':
        logging.critical(
            "Namespace auto-detection failed. "
            "Set namespace using the --namespace option.")
        sys.exit(1)

    logging.info(
        "Namespace auto-detected to '%s' "
        "- you can override this with the --namespace option.", ns)
    return ns