Subprocess

[Terry Reedy]

On 6/14/2019 11:09 AM, Douglas Beard via Python-list wrote:
> Error: IDLE's Subprocess didn't make connection. Either IDLE can't start a subprocess or personal firewall is blocking the connection.python has been working fine until today. I used the python repair but no luck. it does not seem my firewall is blocking. please help

https://docs.python.org/3/library/idle.html#startup-failure
gives several possible IDLE startup failure reasons and things to check

-- 
Terry Jan Reedy