Learning Python

[Tal Einat]

Duncan Booth wrote:
> JAG CHAN wrote:
>
> > Whenever I try to open IDLE, my zone firewall tells me pythonw.exe is
> > trying to access the trusted zone.
> > Whenever I try to open new IDLE window I get the following message:
> > "IDLE's subprocess didn't make connection.Either IDLE can't start a
> > subprocess or personal firewall software is blocking the connection."
> > I will be grateful if you kindly suggest a way out, then, I won't have
> > to install another editor.
>
> You need to configure your firewall to permit IDLE to make the connection.
> Most firewall software when it warns you will give you the option of
> permitting this:
>
> e.g. Windows Firewall says "To help protect your computer, Windows Firewall
> has blocked some features of this program. Do you want to keep blocking
> this program?" with options "Keep Blocking", "Unblock", and "Ask me later".
> All you have to do is click "Unblock" and IDLE will work.

IDLE doesn't connect to the internet, but it uses a socket interface to
communicate between two different processes. Some security software
falsely recognizes this as an attempt to connect to the internet,
although it is not a security hazard at all.


Another solution is to run IDLE with the -n flag, which will cause it
to run in one process (instead of two) and not create a socket. For the
most part you will not notice a difference in IDLE's behavior when
running it this way.

On windows you can create a shortcut to idle.bat and add -n at the end
of the "target" entry. When running IDLE with -n, you should see "====
No Subprocess ====" on one of the first lines of the Shell window.


You probably have your Windows security settings set quite high,
usually I don't see this on Windows systems with default settings.

- Tal
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