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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 split_qname(qname):
 """Split `qname` into namespace URI and local name Return namespace and local name as a tuple. This is a static method."""

        res = qname.split(YinParser.ns_sep)
        if len(res) == 1:       # no namespace
            return None, res[0]
        else:
            return res