Hi, I am new to write Chimera code. Right now I am trying to run another program as a subprocess within Chimera. While I was trying to redirect the standard output from the subprocess to “Reply Log”, the results could be shown only after the subprocess finished but not simultaneously. I was wandering how should I redirect the output to “Reply Log” while the subprocess program is running. Right now I have something like this: def show(sub): for line in sub.stdout: replyobj.info(line) subproc = SM.Popen(cmd, stdin=None, stdout = SM.PIPE, stderr=SM.PIPE) subprog = SM.monitor(‘prog’, subproc, title=‘run’, task=task, afterCB=show(subproc)) If I run this block within the IDLE, then the result printed while it is running (seems still a bit delayed). Where should I change? Thank you in advance. Zhe