View Full Version : pygtkconsole.py program does not accept any input in ubuntu

March 31st, 2011, 05:57 AM

I'm a beginner in pygtk and while I was reading the official tutorial here http://www.pygtk.org/pygtk2tutorial/ch-Introduction.html#sec-ExploringPygtk, I found this(http://www.pygtk.org/pygtk2tutorial/examples/pygtkconsole.py) very effective program that can be very helpful for learning and experimenting with various widgets. But unfortunately this does not accept any input in ubuntu. I searched the internet but could not find any relevant answer or fix. I tried asking in ubuntu IRCs but all in vain.

Please let me know if there exist some remedy to make it work. If its in a official tutorial it must work in a popular OS such as ubuntu.

March 31st, 2011, 12:58 PM
How do you know it's not accepting your input? Perhaps it is accepting it, but not doing anything with it. Post your code and the console output so we can determine what the actual problem is.

April 12th, 2011, 07:06 AM
So do I. I run pygtkconsole.py on my Lucid. Then appear the prompt below :

Python 2.6.5, PyGTK 2.17.0 (Gtk+ 2.20.0)
Interactive console to manipulate GTK+ widgets.

I try to type some characters/commands, but the prompt doesn't response what I type. Any clue?

I think this tool is very helpful for me (and others, may be) as a newbie in python programming.

Thank's before.

April 13th, 2011, 11:36 PM
I've confirmed your issue but am about to run for home.

For now, run your shell/environ and import pygtkconsole such as:

Python 2.6.6 (r266:84292, Sep 15 2010, 15:52:39)
[GCC 4.4.5] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> from pygtkconsole import gtk


April 14th, 2011, 01:27 AM
I don't mean to spam the thread with no real news but that pygtkconsole is in this state isn't a recent problem from a quick test on an old image that I had lying around from last year.

I'll dig in as soon as I can. It's probably something very simple.

April 14th, 2011, 04:24 AM
I put some quick notes up on my website (http://matthew.kurowski.org/?page_id=223)

I modified the pygtkconsole.py file quickly and tested the first tutorial. Everything worked great but keep in mind the limited testing (I did this over dinner, a beer and a mythbusters).

I don't have any more time right now, but I'll try to finish everything tomorrow and possible put some additional intelligence into the module.

For now, feel free to jump to my personal link above, or (better for the raw code) below. So sorry to have to jump and run.

Only test box:
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 10.10
Release: 10.10
Codename: maverick

#!/usr/bin/env python
# -*- Mode: python; c-basic-offset: 4 -*-
# Interactive PyGtk Console, Johan Dahlin 2002
# Kurowksi note; being tweaked for newer dists by mk, hopefully with some intelligence which I'll test on a few dists/platforms
# from pygtkconsole (scratch)

import os
import signal
import sys
import string
import socket, select
from code import InteractiveInterpreter, InteractiveConsole
import gtk
import gobject

# For compatibility, instead of using GDK.INPUT_READ or
# gtk.gdk.INPUT_READ depending on the PyGtk version
gtk.gdk.INPUT_READ = 1

class Mainloop(InteractiveInterpreter):
def __init__(self, read_fd, sock):
self._rfd = os.fdopen(read_fd, 'r')
self._sock = sock
gobject.io_add_watch(read_fd, gtk.gdk.INPUT_READ, self.input_func)
def read_message(self):
length = ord(self._rfd.read(1))
return self._rfd.read(length)
def input_func(self, fd, cond):
data = self.read_message()
more = self.runsource(data)
return True
def run(self):

class Console(InteractiveConsole):
def __init__(self, write_fd, sock, pid):
self._wfd = os.fdopen(write_fd, 'w')
self._sock = sock
self.pid = pid
def send_message(self, message):
self._wfd.write('%c%s' % (len(message), message))
def interact(self, banner=None):
InteractiveConsole.interact(self, banner)
# Die child die
os.kill(self.pid, 9)
def runsource(self, source, filename):
# wait for notification from parent
more = ord(self._sock.recv(1))
return more

class GtkInterpreter(Console):
def __init__(self):
rfd, wfd = os.pipe()
# set up socket for returning command result
sigsock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock_addr = None
for port in range(4321,5321):
sigsock.bind(('', port))
sock_addr = ('', port)
if not sock_addr:
print "Can't open socket"
parent_pid = os.getpid()
child_pid = os.fork()
if not child_pid:
# connect to command return socket
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
g = Mainloop(rfd, sock)
# Wait for command return socket connection
sock, addr = sigsock.accept()
Console.__init__(self, wfd, sock, child_pid)

def interact():
import readline
import rlcompleter
readline.parse_and_bind('tab: complete')
except ImportError:
gi = GtkInterpreter()
gi.push("from gtk import *")
python_version = string.split(sys.version)[0]
pygtk_version = string.join(map(str, gtk.pygtk_version), '.')
gtk_version = string.join(map(str, gtk.gtk_version), '.')
banner = """Python %s, PyGTK %s (Gtk+ %s) Interactive console to manipulate GTK+ widgets.""" % (python_version, pygtk_version, gtk_version)

if __name__ == '__main__':

June 9th, 2011, 08:40 PM
Hi Matthew,

Thank you for the help, but this doesn't work on Natty (at least for me). I'd really like to use this as a learning tool. Do you think you could pull off another magic trick?

August 1st, 2011, 11:12 PM
I have the same problem. It work for me with the changes proposed my Matthew. but you have to be careful of calling the program as he did:
python -i -v -t pygtkconsole.py | tee error.log
The last part is necessary otherwise the program does not work.

Update: I tried with the old version using also:
python -i -v -t pygtkconsole_old.py | tee error.log
and It also works that way!!!.
It seems that the all matter comes with the way the error messages are handle (But that is just my guess !!!). Those are my first steps with python.

April 24th, 2012, 02:12 AM
You have to be careful of calling the program as he did:

python -i -v -t pygtkconsole.py|tee error.log

The last part is necessary, otherwise the program does not work!

This is sufficient:

python -i pygtkconsole.py|tee /dev/null

Still don't know why..