Python wx (Python Card) logging subprocess output to window?

Just about every subprocess you can wrap will buffer its output unless you manage to fool it into believing it's actually connected to a terminal -- and subprocess can't do that. Rather, look into pexpect (runs well on every platform that lets you have a pseudoterminal, i.e. , every platform except Microsoft Windows; on Windows you might try wexpect but I have no experience with the latter).

Just about every subprocess you can wrap will buffer its output unless you manage to fool it into believing it's actually connected to a terminal -- and subprocess can't do that. Rather, look into pexpect (runs well on every platform that lets you have a pseudoterminal, i.e. , every platform except Microsoft Windows; on Windows you might try wexpect but I have no experience with the latter).

These modules give you the subprocess's output as soon as it's produced, and strive to fool the module into producing that output ASAP and without buffering, so they should make it easy for you to receive that output in real time and append it to the text field you want to keep updating.

I was searching for a solution for this too. It turns out the solution is remarkably simple: proc = subprocess. Popen("whatever program", cwd="startup dir", shell=True, stdout=subprocess.

PIPE, stderr=subprocess. STDOUT ) while True: txt = proc.stdout.readline() if not txt: break txt=txt. Replace("\r\n","\n").

Replace("\r\n","\n"). Replace("\\","\") self.components.taStdout. AppendText(txt).

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