def xpath_first_pseudo(self, xpath):
        xpath.add_post_condition('position() = 1')
        return xpath
Multiline examples that define functions and print output.
dataset/ETHPy150Open gawel/pyquery/pyquery/cssselectpatch.py/JQueryTranslator.xpath_first_pseudo--crossover with--dataset/ETHPy150Open ipython/ipython-py3k/IPython/testing/plugin/test_ipdoctest.py/doctest_multiline2