On 13/03/12 16:02, ferreirafm wrote: > Hi James, thank you for your replay. Indeed, the problem is qsub. And as > warned by Robert, I don't have functions properly, but just scripts. > > > -- > View this message in context: > http://python.6.n6.nabble.com/concatenate-function-tp4574176p4574511.html > Sent from the Python - python-list mailing list archive at Nabble.com.
It looks like you're not calling wait() on your subprocesses: you're effectively launching a bunch of processes, then not waiting for them to finish before you ask the next process to operate on the same file. If you haven't given it a good look-over already, the subprocess documentation [1] is worth taking a little time over. [1]: http://docs.python.org/library/subprocess.html#popen-objects James -- http://mail.python.org/mailman/listinfo/python-list