drawing moving circle on line with python

[barrai]

hi how are u
i can draw circle and draw line but i cant how to draw moving circle on line .please help me.

[BashBedlam]

With pygame it would look something like this:

import pygame

SCREEN = pygame.display.set_mode ((600, 400))
circle_x = 50
step = .4

while True :
	for event in pygame.event.get () :
		if event.type == pygame.QUIT :
			quit ()

	SCREEN.fill ((0, 0, 0))
	pygame.draw.rect (SCREEN, (0, 0, 250), (50, 200, 500, 10))
	circle_x += step
	if circle_x > 500 or circle_x < 50 :
		step = -step 
	pygame.draw.ellipse (SCREEN, (255, 0, 0), (circle_x, 150, 50, 50))
	pygame.display.update ()

Or are you using tkinter or turtle or what ?