<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def _set_scroll_v(self, *args):
 """Scroll both categories Canvas and scrolling container"""

        self._canvas_categories.yview(*args)
        self._canvas_scroll.yview(*args)