Guido,
if I googled correctly that “Python and Arduino” series is from 2014. At that 
time there was something to be said for using Python 2.7, but in 2020 that is 
no longer true. And, actually, since Python 2.7 has finally been moved to 
end-of-life last year many tutorials that refer to Python 2.7 specifically will 
stop to work (as you have found out).

Your best bet is to ignore all the version numbers Paul McWorther mentions in 
his tutorial, and try to download the latest version of everything. See how far 
that gets you.

You’re not the first one to run into this problem, as you can see from the 
comments under the video, but unfortunately none of the people that came across 
the Python 2.7 issues added comments saying what they had to do to run the 
tutorial in 2020. If you get it to work: maybe add a comment to the video to 
say what you had to change to make it work?

And feel free to post problems here,

Jack

> On  29-Dec-2020, at 19:29 , Guido Deboeck <guido54...@gmail.com> wrote:
> 
> In Lesson 2 of Python and Arduino by Paul McWhorter he suggest downloading 
> Python 2.7 rather than the more recent version 3.x. He also suggests to 
> download pyserial 2.7 as well as vPhython. I have search for pyserial 2.7 and 
> have not been able to find it on the web As to vPhython I found PyCharm, but 
> that is not for free. Could you pls help me to find pyserial 2.7 as well as 
> vPhython for use on a Mac. Thank you.
> 
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--
Jack Jansen, <jack.jan...@cwi.nl>, http://www.cwi.nl/~jack
If I can't dance I don't want to be part of your revolution -- Emma Goldman



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