No output from popen in Tkinter text widget

[Kevin Walzer]

I'm trying to display the output of an external process (invoked via
popen) in a Tkinter text widget. I successfully start the process (based
on what I'm seeing in my terminal output), but I can't get the output to
display in the Tkinter widget. It seems to block.

Any ideas? My code is below:

def runDump(self):

self.password.d estroy()

self.passtext = self.passtext.g et()

file = os.popen('echo %s | sudo -S /usr/sbin/tcpdump -v -i
en1' % self.passtext, 'r')

for line in file:
self.t.insert(E ND, line)

--
Kevin Walzer
Code by Kevin

http://www.codebykevin.com

[John McMonagle]

Re: No output from popen in Tkinter text widget

Kevin Walzer wrote:

I'm trying to display the output of an external process (invoked via
popen) in a Tkinter text widget. I successfully start the process (based
on what I'm seeing in my terminal output), but I can't get the output to
display in the Tkinter widget. It seems to block.
>
Any ideas? My code is below:
>
def runDump(self):
>
self.password.d estroy()
>
self.passtext = self.passtext.g et()
>
file = os.popen('echo %s | sudo -S /usr/sbin/tcpdump -v -i
en1' % self.passtext, 'r')
>
for line in file:
self.t.insert(E ND, line)
>

self.t.update()


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