> Can this really be made safe without an explicit flow control protocol, > such as a pseudo-TTY? stdio reads data from pipes such as stdin in 4K > or so chunks.
I don't think the subprocess module uses stdio. > I can easily imagine the child blocking while it waits > for its stdin buffer to fill, while the parent in turn blocks waiting > for the child's output arrive. That would be a bug in the parent process, for expecting output when none will arrive. As a consequence, some child programs might not be suitable for this kind of operation. This is no surprise - some programs are not suitable for automated operation at all, because they bring up windows, and communicate with their environment by means other than stdin and stdout (or, if you want to operate them automatically, you have to use AppleScript, or COM). Regards, Martin _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
