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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 _handle_start_tag(self, attrs):
 """ Handle opening tag element :param attrs: Attributes of the element :type attrs: Dict """

        try:
            tag_key = attrs['k']
        except KeyError:
            raise ValueError("Tag without name/key.")
        self._curr['tags'][tag_key] = attrs.get('v')