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From: Gregory Ewing <greg.ewing@canterbury.ac.nz>
Newsgroups: comp.lang.python
Subject: Re: Lines on a tkinter.Canvas
Date: Thu, 12 Jun 2014 23:38:04 +1200
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Pedro Izecksohn wrote:
> The Canvas' method create_line turns on at least 2 pixels. But I want to turn
> on many single pixels on a Canvas.

You could try using a 1x1 rectangle instead.

However, be aware that either of these will use quite a
lot of memory per pixel. If you are drawing a very large
number of pixels, this could cause performance problems.
In that case, you might want to use a different approach,
such as creating an image and telling the canvas to display
the image.

-- 
Greg