Patch #1513695: New turtle module, with demos.

Demo/turtle/turtledemo_two_canvases.py

@@ -0,0 +1,49 @@
+#!/usr/bin/python
+## DEMONSTRATES USE OF 2 CANVASES, SO CANNOT BE RUN IN DEMOVIEWER!
+"""turtle example: Using TurtleScreen and RawTurtle
+for drawing on two distinct canvases.
+"""
+from turtle import TurtleScreen, RawTurtle, TK
+
+root = TK.Tk()
+cv1 = TK.Canvas(root, width=300, height=200, bg="#ddffff")
+cv2 = TK.Canvas(root, width=300, height=200, bg="#ffeeee")
+cv1.pack()
+cv2.pack()
+
+s1 = TurtleScreen(cv1)
+s1.bgcolor(0.85, 0.85, 1)
+s2 = TurtleScreen(cv2)
+s2.bgcolor(1, 0.85, 0.85)
+
+p = RawTurtle(s1)
+q = RawTurtle(s2)
+
+p.color("red", "white")
+p.width(3)
+q.color("blue", "black")
+q.width(3)
+
+for t in p,q:
+    t.shape("turtle")
+    t.lt(36)
+
+q.lt(180)
+
+for i in range(5):
+    for t in p, q:
+        t.fd(50)
+        t.lt(72)
+for t in p,q:
+    t.lt(54)
+    t.pu()
+    t.bk(50)
+
+## Want to get some info?
+
+print s1, s2
+print p, q
+print s1.turtles()
+print s2.turtles()
+
+TK.mainloop()