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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 draw_timeline(self):
 """Draw the contents of the whole TimeLine Canvas"""

        # Configure the canvas
        self.clear_timeline()
        self.create_scroll_region()
        self._timeline.config(width=self.pixel_width)
        self._canvas_scroll.config(width=self._width, height=self._height)
        # Generate the Y-coordinates for each of the rows and create the lines indicating the rows
        self.draw_separators()
        # Create the markers on the timeline
        self.draw_markers()
        # Create the ticks in the _canvas_ticks
        self.draw_ticks()
        self.draw_time_marker()