Load custom background images

[BTWS2]

Load custom backgrounds in turtle canvas with bgpic.

Edit: This feature request is to make "connect-the-dots"-exercises possible. This would be ideal to learn about the coordinate system and get some visual help. E.g.

[inteon]

How would the image be provided?
Should the image be on a public url?
Does turtle support public urls?

[BTWS2]

How would the image be provided?

In the workdir or evaluation folder provided by the teacher. The judge would take the alphabetically first gif file, if any. See updated issue description for use case.

Should the image be on a public url?

No.

Does turtle support public urls?

No.

Turtle does support loading of gif-files, but svg-turtle doesn't support it as far as I know. This was a long shot, so prioritize other issues first.

import turtle

def test_bgpic():
    screen = turtle.getscreen()
    screen.bgpic("sample.gif")

test_bgpic()
turtle.done()