I'm experimenting with Gtk+ 3 and I'm creating a program which gets the output of the dpkg --get-selections
command and displays it into a Gtk+ 3 TextView
.
When I run my program I get the following error:
Traceback (most recent call last):
File "file1.py", line 36, in <module>
window = dpkgApp()
File "file1.py", line 24, in __init__
with open("", "w") as f:
IOError: [Errno 2] No such file or directory: ''
dpkg: error: error writing to '<standard output>': Broken pipe
This is my code:
#!/usr/bin/python
import io, subprocess, os
from gi.repository import Gtk
class dpkgApp(Gtk.Window):
def __init__(self):
Gtk.Window.__init__(self, title="Software/dependencies")
self.table = Gtk.Table(3, 3, True)
self.add(self.table)
self.scrollWindow = Gtk.ScrolledWindow()
self.table.attach(self.scrollWindow, 0, 1, 0, 1)
self.textView = Gtk.TextView()
self.scrollWindow.add(self.textView)
#######################################################################
subprocess.call("dpkg --get-selections", shell=True)
dpkg_output = os.popen("dpkg --get-selections")
with open("", "w") as f:
f.writeline(dpkg_output)
f.close()
buffer = Gtk.TextBuffer()
self.textView.get_buffer(buffer)
self.textView.set_editable(False)
self.textView.set_wrap_mode(True)
self.textView.set_cursor_visible(False)
buffer.set_text(dpkg_output)
window = dpkgApp()
window.connect("delete-event", Gtk.main_quit)
window.show_all()
Gtk.main()
Looking on StackOverflow, it appears to be a problem with subprocess
, but I'm using the os
module to get the dpkg
command output - and the error ouput includes dpkg: error:
, so maybe it's a dpkg
error?
I've tried replacing the os.popen
line with os.Popen(["dpkg --get-selections"], stdout=PIPE)
and adding from subprocess import Popen, PIPE
but I just get an error:
AttributeError: 'module' object has no attribute 'Popen'
Any ideas?