You can set start hour/min/sec. Same to end. You can use this when you want to make a timer label which follows hh:mm:ss format. By the way, default end time is 00:00:00. You can change it with methods i'll explain below.

Method, Signal Overview

setStartHour(h: int), setStartMinute(m: int), setStartSecond(s: int). Same to end.
setTimerReverse(f: bool) to make timer go reversed. Default is True, which means subtracts one second.
There are useful methods like start(), pause(), restart(), refresh(), reset(), stop() as well as useful signals like doubleClicked, prepared, started, paused, restarted, refreshed, resetSignal, stopped.
isPaused() -> bool - Check if the timer being paused or not

Example

Code Sample


from PyQt5.QtWidgets import QApplication, QWidget, QGridLayout

from pyqt_timer_label import TimerLabel





if __name__ == "__main__":

    import sys



    app = QApplication(sys.argv)

    lbl = TimerLabel()

    lbl.setStartHour(0)

    lbl.setStartMinute(0)

    lbl.setStartSecond(15)

    widget = QWidget()

    lay = QGridLayout()

    lay.addWidget(lbl)

    widget.setLayout(lay)

    widget.show()

    lbl.start()

    sys.exit(app.exec_())

Start time is 00:00:15. End time is by default so it is 00:00:00.

Result

https://user-images.githubusercontent.com/55078043/154182901-bb7fd5fb-4eb1-46dd-bd5e-3cc9bacf95c7.mp4

Note: I started recording from 12 seconds approximately. Preparation for recording took time so the result shows from the moment which indicates 9 seconds left.

pyqt-timer-label