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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 get_child(self, name, attribs=None):
 """ Returns the first child that matches the given name and attributes. """

        if name == '.':
            if attribs is None or len(attribs) == 0:
                return self
            if attribs == self.attribs:
                return self
        return self.child_index.get(nodehash(name, attribs))