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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_lines_internal(self, coords, colour, bg):
 """Helper to draw lines connecting a set of nodes that are scaled for the Screen."""

        for i, (x, y) in enumerate(coords):
            if i == 0:
                self._screen.move(x, y)
            else:
                self._screen.draw(x, y, colour=colour, bg=bg, thin=True)