clock.py

# importing libraries 
from PyQt5.QtWidgets import *
from PyQt5 import QtCore, QtGui 
from PyQt5.QtGui import *
from PyQt5.QtCore import *
import sys 

# creating a clock class 
class Clock(QMainWindow): 

	# constructor 
	def __init__(self): 
		super().__init__() 

		# creating a timer object 
		timer = QTimer(self) 

		# adding action to the timer 
		# update the whole code 
		timer.timeout.connect(self.update) 

		# setting start time of timer i.e 1 second 
		timer.start(1000) 

		# setting window title 
		self.setWindowTitle('Clock') 

		# setting window geometry 
		self.setGeometry(200, 200, 300, 300) 

		# setting background color to the window 
		self.setStyleSheet("background : black;") 

		# creating hour hand 
		self.hPointer = QtGui.QPolygon([QPoint(6, 7), 
										QPoint(-6, 7), 
										QPoint(0, -50)]) 

		# creating minute hand 
		self.mPointer = QPolygon([QPoint(6, 7), 
								QPoint(-6, 7), 
								QPoint(0, -70)]) 

		# creating second hand 
		self.sPointer = QPolygon([QPoint(1, 1), 
								QPoint(-1, 1), 
								QPoint(0, -90)]) 
		# colors 
		# color for minute and hour hand 
		self.bColor = Qt.green 

		# color for second hand 
		self.sColor = Qt.red 

	# method for paint event 
	def paintEvent(self, event): 

		# getting minimum of width and height 
		# so that clock remain square 
		rec = min(self.width(), self.height()) 

		# getting current time 
		tik = QTime.currentTime() 

		# creating a painter object 
		painter = QPainter(self) 


		# method to draw the hands 
		# argument : color rotation and which hand should be pointed 
		def drawPointer(color, rotation, pointer): 

			# setting brush 
			painter.setBrush(QBrush(color)) 

			# saving painter 
			painter.save() 

			# rotating painter 
			painter.rotate(rotation) 

			# draw the polygon i.e hand 
			painter.drawConvexPolygon(pointer) 

			# restore the painter 
			painter.restore() 


		# tune up painter 
		painter.setRenderHint(QPainter.Antialiasing) 

		# translating the painter 
		painter.translate(self.width() / 2, self.height() / 2) 

		# scale the painter 
		painter.scale(rec / 200, rec / 200) 

		# set current pen as no pen 
		painter.setPen(QtCore.Qt.NoPen) 


		# draw each hand 
		drawPointer(self.bColor, (30 * (tik.hour() + tik.minute() / 60)), self.hPointer) 
		drawPointer(self.bColor, (6 * (tik.minute() + tik.second() / 60)), self.mPointer) 
		drawPointer(self.sColor, (6 * tik.second()), self.sPointer) 


		# drawing background 
		painter.setPen(QPen(self.bColor)) 

		# for loop 
		for i in range(0, 60): 

			# drawing background lines 
			if (i % 5) == 0: 
				painter.drawLine(87, 0, 97, 0) 

			# rotating the painter 
			painter.rotate(6) 

		# ending the painter 
		painter.end() 

# Driver code 
if __name__ == '__main__': 
	
app = QApplication(sys.argv) 
	
# creating a clock object 
win = Clock() 
	
# show 
win.show() 
	
exit(app.exec_())