Re: [Tutor] trouble with a small Tkinter example
On 9/21/2010 1:50 PM Chuck Mayers said... Hello, I'm having trouble with this small example program: http://en.literateprograms.org/Bresenham%27s_line_algorithm_%28Python%29 When I run it, I only get a blank grey window. I'm running Python 2.6 under Windows XP. If there's a problem with the code, I can't see it... it seems like it should work. Can anyone else try this and see if it works for them? If I stick this line in before the loop, it does draw a red line, so I know my copy of Python/Tkinter is working: canvas.create_line(10, 100, 5, 50 , fill='red') Using this form of the line, canvas.create_line(xstart, ystart, xend, yend, fill="red") seems to do it, although I can't say what versions allowed the author to (apparently successfully) write canvas.draw_line(xstart, ystart, xend, yend, color="blue") HTH, Emile ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] trouble with a small Tkinter example
There is a not-very-obvious 'Download Code' link at the very bottom of the article. Direct link: http://en.literateprograms.org/Special:Downloadcode/Bresenham%27s_line_algorithm_%28Python%29 On Tue, Sep 21, 2010 at 4:13 PM, Emile van Sebille wrote: > It looks like they've got you assembling the program from bits and pieces > as it's presented and reviewed. Can you post your program as you've > reassembled it so we can see what's actually coded? > > Emile > > ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] trouble with a small Tkinter example
On 9/21/2010 1:50 PM Chuck Mayers said... Hello, I'm having trouble with this small example program: http://en.literateprograms.org/Bresenham%27s_line_algorithm_%28Python%29 When I run it, I only get a blank grey window. I'm running Python 2.6 under Windows XP. It looks like they've got you assembling the program from bits and pieces as it's presented and reviewed. Can you post your program as you've reassembled it so we can see what's actually coded? Emile ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] trouble with a small Tkinter example
> I'm having trouble with this small example program: > > http://en.literateprograms.org/Bresenham%27s_line_algorithm_%28Python%29 > > When I run it, I only get a blank grey window. I'm running Python 2.6 under > Windows XP. > > If there's a problem with the code, I can't see it... it seems like it should > work. Can anyone else try this and see if it works for them? It appears that Tkinter (or probably the underling tcl/tk) is smart: if you create a line with the same start and end points, it won't draw a line. Try it: create_line(10, 100, 10, 100, fill='red') won't work. > If I stick this line in before the loop, it does draw a red line, so I know > my copy of Python/Tkinter is working: > canvas.create_line(10, 100, 5, 50 , fill='red') ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
