ÿØÿàJFIFÿþ ÿÛC       ÿÛC ÿÀÿÄÿÄ"#QrÿÄÿÄ&1!A"2qQaáÿÚ ?Øy,æ/3JæݹÈ߲؋5êXw²±ÉyˆR”¾I0ó2—PI¾IÌÚiMö¯–þrìN&"KgX:Šíµ•nTJnLK„…@!‰-ý ùúmë;ºgµŒ&ó±hw’¯Õ@”Ü— 9ñ-ë.²1<yà‚¹ïQÐU„ہ?.’¦èûbß±©Ö«Âw*VŒ) `$‰bØԟ’ëXÖ-ËTÜíGÚ3ð«g Ÿ§¯—Jx„–’U/ÂÅv_s(Hÿ@TñJÑãõçn­‚!ÈgfbÓc­:él[ðQe 9ÀPLbÃãCµm[5¿ç'ªjglå‡Ûí_§Úõl-;"PkÞÞÁQâ¼_Ñ^¢SŸx?"¸¦ùY騐ÒOÈ q’`~~ÚtËU¹CڒêV  I1Áß_ÿÙ""" turtle-example-suite: tdemo_wikipedia3.py This example is inspired by the Wikipedia article on turtle graphics. (See example wikipedia1 for URLs) First we create (ne-1) (i.e. 35 in this example) copies of our first turtle p. Then we let them perform their steps in parallel. Followed by a complete undo(). """ from turtle import Screen, Turtle, mainloop from time import perf_counter as clock, sleep def mn_eck(p, ne,sz): turtlelist = [p] #create ne-1 additional turtles for i in range(1,ne): q = p.clone() q.rt(360.0/ne) turtlelist.append(q) p = q for i in range(ne): c = abs(ne/2.0-i)/(ne*.7) # let those ne turtles make a step # in parallel: for t in turtlelist: t.rt(360./ne) t.pencolor(1-c,0,c) t.fd(sz) def main(): s = Screen() s.bgcolor("black") p=Turtle() p.speed(0) p.hideturtle() p.pencolor("red") p.pensize(3) s.tracer(36,0) at = clock() mn_eck(p, 36, 19) et = clock() z1 = et-at sleep(1) at = clock() while any(t.undobufferentries() for t in s.turtles()): for t in s.turtles(): t.undo() et = clock() return "runtime: %.3f sec" % (z1+et-at) if __name__ == '__main__': msg = main() print(msg) mainloop()