On 26/10/16 04:19, Ed Troy wrote: > I am pretty sure I installed python3. And, also, matplotlib, scipy, and > numpy. If I enter either python or python3, I get the >>> prompt, so I > may have both installed.
Yes, that's normal. Ubuntu uses python 2 for some of its utilities. > How do I verify which versions of python and > numpy, matplotlib and scipy I have installed? It looks like you have the libraries for v3 but not for v2. Thats OK because the script you want to run is only suitable for v3. > Would it be a help if I actually list the python program that I am > trying to run? Yes. I'm assuming you just cut n paste the code from the web site but something could have gone wrong with the fpormatting and Python is sensitive to that, so seeing your actual code would be a good idea. Meanwhile... >> Go to the end of the file and modify the last segment >> to look like: >> >> if __name__ == "__main__": >> print("Starting....") >> main() >> print("Stopping...") Did you try that? And if so did you see either/both messages when you ran the program under python3? -- Alan G Author of the Learn to Program web site http://www.alan-g.me.uk/ http://www.amazon.com/author/alan_gauld Follow my photo-blog on Flickr at: http://www.flickr.com/photos/alangauldphotos _______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor