@property
    def prev(self):
        """ Return the previous window """
        prev_index = 1 - self.index
        prev_handle = self._browser.driver.window_handles[prev_index]
        return Window(self._browser, prev_handle)
dataset/ETHPy150Open cobrateam/splinter/splinter/driver/webdriver/__init__.py/Window.prev/swapped operands of `-`