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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 select_by_index(self, index):
 """Select the option at the given index. This is done by examing the "index" attribute of an element, and not merely by counting. :Args: - index - The option at this index will be selected throws NoSuchElementException If there is no option with specified index in SELECT """

        match = str(index)
        for opt in self.options:
            if opt.get_attribute("index") == match:
                self._setSelected(opt)
                return
        raise NoSuchElementException("Could not locate element with index %d" % index)