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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 clone(self, parent=None):
 """ Deep clone of this element and children. @param parent: An optional parent for the copied fragment. @type parent: I{Element} @return: A deep copy parented by I{parent} @rtype: I{Element} """

        root = Element(self.qname(), parent, self.namespace())
        for a in self.attributes:
            root.append(a.clone(self))
        for c in self.children:
            root.append(c.clone(self))
        for ns in self.nsprefixes.items():
            root.addPrefix(ns[0], ns[1])
        return root