Bug#481480: python-gtk2: gtk.main() reads from stdin, so freezes GUI.
Francisco J. Rodríguez Bogado
pacoqueen at gmail.com
Fri May 16 12:24:09 UTC 2008
Package: python-gtk2
Version: 2.12.1-2
Severity: important
gtk.main() seems to read from stdin somewhere in mainloop and freezes GUI when a python script that uses pygtk is run from terminal.
For instance, with this script:
$ cat test.py
import pygtk
import gtk
v = gtk.Window()
caja = gtk.VBox()
caja.add(gtk.Label("Hola holita, vecinito."))
boton = gtk.Button(stock = gtk.STOCK_QUIT)
boton.connect("clicked", lambda *args, **kw: gtk.main_quit())
caja.add(boton)
v.add(caja)
v.show_all()
gtk.main()
$ python test.py
... Doesn't even show the gtk.Window.
Tracing with strace:
$ strace python test.py
[lot of lines omitted...]
futex(0x2b1c1d658460, 0x81 /* FUTEX_??? */, 2147483647) = 0
uname({sys="Linux", node="nostromo", ...}) = 0
poll([{fd=4, events=POLLIN}], 1, 0) = 0
read(0,
... and that's all.
If I try this:
$ python test.py </dev/null
All works fine.
If the same script is launched from Nautilus or gnome launch dialog
(Alt+F2) works fine too.
-- System Information:
Debian Release: lenny/sid
APT prefers unstable
APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)
Kernel: Linux 2.6.24-1-amd64 (SMP w/2 CPU cores)
Locale: LANG=es_ES.UTF-8, LC_CTYPE=es_ES.UTF-8 (charmap=UTF-8) (ignored: LC_ALL set to es_ES.UTF-8)
Shell: /bin/sh linked to /bin/bash
Versions of packages python-gtk2 depends on:
ii libatk1.0-0 1.22.0-1 The ATK accessibility toolkit
ii libc6 2.7-11 GNU C Library: Shared libraries
ii libcairo2 1.6.4-2 The Cairo 2D vector graphics libra
ii libglib2.0-0 2.16.3-2 The GLib library of C routines
ii libgtk2.0-0 2.12.9-4 The GTK+ graphical user interface
ii libpango1.0-0 1.20.2-2 Layout and rendering of internatio
ii python 2.5.2-1 An interactive high-level object-o
ii python-cairo [python2.5-cairo 1.4.12-1 Python bindings for the Cairo vect
ii python-gobject [python2.5-gob 2.14.1-4 Python bindings for the GObject li
ii python-numeric [python2.5-num 24.2-8.2 Numerical (matrix-oriented) Mathem
ii python-support 0.8.1 automated rebuilding support for P
pn python2.4-cairo <none> (no description available)
pn python2.4-gobject <none> (no description available)
pn python2.4-numeric <none> (no description available)
python-gtk2 recommends no packages.
-- no debconf information
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