Super simple gevent qt loop polling

gevent_poll_loop.py

from PyQt5 import QtWidgets, QtCore
import gevent


def test():
    print("PRESSED")
    for i in range(5):
        gevent.sleep(1)
        print("Waited", i)
    print("Done")


class Main(QtWidgets.QMainWindow):
    def __init__(self):
        super(Main, self).__init__(None)
        self._btn = QtWidgets.QPushButton("PRESS")
        self._btn.clicked.connect(lambda: gevent.spawn(test))
        self.setCentralWidget(self._btn)


app = QtWidgets.QApplication([])
win = Main()
win.show()
loop = QtCore.QTimer()
loop.setInterval(10)
loop.timeout.connect(lambda: gevent.sleep(0.01))
loop.start()
app.exec_()