I found this solution, but it prints after function ends. When i press button_collect_data i'm calling print_sleep function.
I expected that it would print each value after 1 sec sleep but it prints all after 3 second.
Main point that i want to see function progress, so
Question: What is the way to redirect stdout to some text widget in QT app to show every print immediately?
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
...
self.button_collect_data = QtWidgets.QPushButton(self.centralwidget)
self.button_collect_data.setMaximumSize(QtCore.QSize(399, 16777215))
self.button_collect_data.setObjectName("button_collect_data")
...
self.console = QtWidgets.QTextEdit(self.centralwidget)
self.console.setReadOnly(True)
self.console.setObjectName("console")
sys.stdout = EmittingStream(textWritten=self.normalOutputWritten)
self.add_functions()
def add_functions(self):
self.button_collect_data.clicked.connect(lambda: QtCore.QProcess(self.print_sleep()))
def normalOutputWritten(self, text):
"""Append text to the QTextEdit."""
# Maybe QTextEdit.append() works as well, but this is how I do it:
cursor = self.console.textCursor()
cursor.movePosition(QtGui.QTextCursor.End)
cursor.insertText(text)
self.console.setTextCursor(cursor)
self.console.ensureCursorVisible()
def print_sleep(self):
for i in range(3):
print(i)
time.sleep(1)
class EmittingStream(QtCore.QObject):
textWritten = QtCore.pyqtSignal(str)
def write(self, text):
self.textWritten.emit(str(text))
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
MainWindow = QtWidgets.QMainWindow()
ui = Ui_MainWindow()
ui.setupUi(MainWindow)
MainWindow.show()
sys.exit(app.exec_())
