In this article we will see how to create a digital clock using PyQt5, this digital clock will basically tells the current time in the 24 hour format.
In order to create a digital clock we have to do the following:
- Create a vertical layout
- Create label to show the current time and put it in the layout and align it to the center.
- Create a QTimer object.
- Add action to the QTimer object such that after every 1sec action method get called.
- Inside the action method get the current time and show that time with the help of label.
Below is the implementation:
Python3
# importing required librarieimport sysfrom PyQt5.QtWidgets import QApplication, QWidgetfrom PyQt5.QtWidgets import QVBoxLayout, QLabelfrom PyQt5.QtGui import QFontfrom PyQt5.QtCore import QTimer, QTime, Qtclass Window(QWidget): def __init__(self): super().__init__() # setting geometry of main window self.setGeometry(100, 100, 800, 400) # creating a vertical layout layout = QVBoxLayout() # creating font object font = QFont('Arial', 120, QFont.Bold) # creating a label object self.label = QLabel() # setting center alignment to the label self.label.setAlignment(Qt.AlignCenter) # setting font to the label self.label.setFont(font) # adding label to the layout layout.addWidget(self.label) # setting the layout to main window self.setLayout(layout) # creating a timer object timer = QTimer(self) # adding action to timer timer.timeout.connect(self.showTime) # update the timer every second timer.start(1000) # method called by timer def showTime(self): # getting current time current_time = QTime.currentTime() # converting QTime object to string label_time = current_time.toString('hh:mm:ss') # showing it to the label self.label.setText(label_time)# create pyqt5 appApp = QApplication(sys.argv)# create the instance of our Windowwindow = Window()# showing all the widgetswindow.show()# start the appApp.exit(App.exec_()) |
Output : 
Code Explanation:
- The code starts by importing the required libraries.
- Then it creates a class called Window and initializes it with __init__() method.
- Next, the code sets the geometry of the main window to 100×100 pixels and 800×400 pixels respectively.
- It then creates a vertical layout object which is used for arranging widgets in order vertically on the screen.
- The next step is creating font object using QFont class from PyQt5 library followed by creating a label object using QLabel class from PyQt5 library.
- Finally, the code adds a label to the layout and sets its alignment to Qt’s align center option before setting font of label to Arial font with a size 120 points bold style.
- The code is a simple example of how to create a window and show it.
