Display realtime output of a subprocess in a tkinter widget

Question

My question is almost the same as this one: Widget to Display subprocess stdout? but a step further.

I have the following code (python2.7):

def btnGo         


        

Answer 1

This is an interesting solution. Would that be possible to have the whole working code?

I am asking because I was wonder how the while True does not block the usability of the whole GUI... does it not?

As suspected, I tried and this example is not really work. If you use something like "ls -Rf /" as command, you will see that the while loop will make the txt output flowing pretty well. However both windows (main and secondary) will block big time.

I suspect you need to send the print txt part in a separated thread or process. Or, if you use pygtk you can use stuff like

gobject.io_add_watch(self.ep1.stdout,       # file descriptor
                     gobject.IO_IN,         # condition
                     self.write_to_buffer ) # callback

which was actually invented for this.