def insertIndent():
            if self.useTabs:
                cursor.insertText('\t')
            else:  # indent to integer count of indents from line start
                charsToInsert = self.width - (len(self._qpart.textBeforeCursor()) % self.width)
                cursor.insertText(' ' * charsToInsert)
def test_impl(n):
            df = pd.DataFrame({'A': np.ones(n), 'B': np.random.ranf(n)})
            Ac = df.A.cumsum()
            return Ac.sum()