Pyside Qprocess Need Help

NOTE: class MyWindow(QWidget): In init self.proc = QtCore.QProcess(self) self.te = QTextEdit(self) self.btn = QPushButton('Execute', self) self.btn.clicked.connect(self.__event_

Solution 1:

You need to ensure that the program (gcc in this case) runs with stdout unbuffered. Most console applications buffer unless writing to a console (cmd.exe or terminal) since that improves performance. Presumably the internal streams used by Qt to buffer the QProcess' output are not seen as ttys, which is why you get buffering and only see output at the end.

Normally C programs can be made to turn buffering off (setvbuf), but most don't do this. Since you need things to work with gcc, which presunably buffers for non-ttys, you'll have to use a utility like unbuffer. See this answer.