Julio Sergio wrote: > J. Cliff Dyer <jcd <at> sdf.lonestar.org> writes: > >> >> readlines() reads all the lines from the filehandle, but the filehandle >> hasn't signalled that it is done writing lines, so fo is waiting until >> fi is complete. You either need to keep reading one line at a time, and >> manually release control when there's nothing more to read, or you need >> to do an fi.close() before you try to use fo.readlines(). >> >> > > Thanks... It worked as you said. Here is how I coded it: > > ->>> fi.writelines(["uno\n","dos\n","tres\n"]) > ->>> fi.close() > ->>> l = fo.readlines() > ->>> l > ['uno\n', 'dos\n', 'tres\n']
I believe this may hang on the fi.writelines(...) line if you write "too much" data. >From the subprocess documentation: """ Warning Use communicate() rather than .stdin.write, .stdout.read or .stderr.read to avoid deadlocks due to any of the other OS pipe buffers filling up and blocking the child process. """ -- http://mail.python.org/mailman/listinfo/python-list
