Running multiple processes and capturing the output in python with pygtk
<p>I'd like to write a simple application that runs multiple programs and displays their output in multiple terminal (style) windows.  In addition, I want to be able to read the stdout/stderr of these processes and search for keywords in the output.</p>

<p>I've tried implementing this two ways in python, the first using subprocess.Popen and the second using vte (python-vte).</p>

<p>I've only gotten Popen to work w/ polling.  I have to constantly check to see if the processes have data to be read, read the data, and then send it to my TextArea.  It's been recommended to use gobject.io_add_watch() instead, but whenever I try that my program hangs on the second call to io_add_watch--it's like it can only handle one file descriptor at a time.</p>

<p>vte works great but I haven't found a reliable way to capture the output.  You can get a callback when the cursor moves and then screen scrape w/ get_text(), but I've already run into cases where these programs I'm viewing generate an obscene about of tty in one go and then it's off the screen.  There doesn't appear to be a callback that contains new text to be added to the window.</p>

<p>Any ideas?</p>
