Does this help? https://stackoverflow.com/questions/29567051/python-error-idles-subprocess-didnt-make-connection-either-idle-cant-start
On Sat, Oct 17, 2020 at 12:44 PM Dave Dungan via Python-list < python-list@python.org> wrote: > Hello, > > I bought a book called Coding for Beginners to learn how to code using > Python. The first few exercises went fine. When I got to the page called > Recognizing types and did the exercise and saved it and tried to run the > module it comes up with a Subprocess Connection Error. It says, "IDLE's > subprocess didn't make connection. See the Start up failure section of the > IDLE doc, online at > https://docs.python.org/3/library/idle.html#startup-failure." I went > there and it said to try uninstalling python and then reinstalling it. I > did this and it did the same thing again. It also said something about it > is because of the antivirus software. I tried installing python on a > different computer and it happened at the exact same place in the exercises > in the book. I am far from being a computer whiz, just thought it would be > fun to learn some simple coding. Any help would be appreciated. One more > thing, the book says to save it as "types.py". > > Thank you, > Dave Dungan > -- > https://mail.python.org/mailman/listinfo/python-list > -- https://mail.python.org/mailman/listinfo/python-list