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From: Dominik Gabi on 11 May 2010 09:22
Hi,

I'm new to python and have been playing around with it for a few days
now. So please forgive me if this is a stupid question :)

I've tried writing a little application with pygtk and urllib. When a
button is clicked I create a new thread that opens an URL with urllib.
The new thread is running but as soon as I call
urllib.urlopen("https://someurl", postdata) it blocks. It blocks until
I do something in the interface (e.g. click another button). I've
obviously missed something here. The interface should not interfere
with anything that runs in an other thread!?

Here are a few extracts from my code:

def send_message(self, widget, data=None):
# This is called when the button is clicked ...
threading.Thread(target=message.send).start() ...

def send(self):
# This is executed in its own thread
...
postdata = urllib.urlencode(data) # This line is the last one
executed
resp = urllib.urlopen('https://theurl', postdata)

Regards, Dominik.
From: Antoine Pitrou on 11 May 2010 09:54
On Tue, 11 May 2010 06:22:29 -0700 (PDT)
Dominik Gabi <dkgispam(a)gmail.com> wrote:
>
> I'm new to python and have been playing around with it for a few days
> now. So please forgive me if this is a stupid question :)
>
> I've tried writing a little application with pygtk and urllib.

For the record, have you tried calling gobject.threads_init() at the
beginning of your application (just after importing all modules)?


From: Dominik Gabi on 11 May 2010 10:35
> For the record, have you tried calling gobject.threads_init() at the
> beginning of your application (just after importing all modules)?

I haven't... now it works, thanks :) Any tips on how to avoid mistakes
like that in the future? I'm somewhat confused as to how I was
supposed to get this out of the documentation...
From: Antoine Pitrou on 11 May 2010 10:55
On Tue, 11 May 2010 07:35:52 -0700 (PDT)
Dominik Gabi <dkgispam(a)gmail.com> wrote:

> > For the record, have you tried calling gobject.threads_init() at the
> > beginning of your application (just after importing all modules)?
>
> I haven't... now it works, thanks :) Any tips on how to avoid mistakes
> like that in the future? I'm somewhat confused as to how I was
> supposed to get this out of the documentation...

I'm afraid I don't know the answer. I'm not a pygtk expert at all, I
just remember that I had to do that in one of my applications long ago,
otherwise pygtk doesn't support Python threads properly.

Regards

Antoine.


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