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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 create_scroll_region(self):
 """Setup the scroll region on the Canvas"""

        canvas_width = 0
        canvas_height = 0
        for label in self._category_labels.values():
            width = label.winfo_reqwidth()
            canvas_height += label.winfo_reqheight()
            canvas_width = width if width > canvas_width else canvas_width
        self._canvas_categories.config(scrollregion="0 0 {0} {1}".format(canvas_width, canvas_height))