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PyQt5 – Number Guessing Game
  • Last Updated : 03 Jul, 2020

In this article we will see how we can create a number guessing name using PyQt5. The Number guessing game is all about guessing the number randomly chosen by the computer in the given number of chances. Below is how game will look like

GUI implementation steps
1. Create a head label to show the game name, set its alignment font and color
2. Create a info label that gives all the information and set its style sheet
3. Create a spin box to change the guessed number
4. Create a push button to check the guess
5. Create a start and reset buttons and add color effect to them

Back end implementation steps
1. Create a variable number that will store the random number
2. Add action to the start button
3. Inside the start button action get the random number from 1 to 20 using random method
4. Set the text to the info label and change its color to grey
5. Add action to the check button
6. Inside the check button action, get the spin box value and compare it with the random number
7. If numbers are equal change info label color to green and set text as “correct”
8. Else check if smaller then say number is smaller guess again similarly do if number is bigger
9. Add action to the reset button
10. Inside the reset action set welcome text to info label and set its color to grey

Below is the implementation






# importing libraries
from PyQt5.QtWidgets import * 
from PyQt5 import QtCore, QtGui
from PyQt5.QtGui import * 
from PyQt5.QtCore import * 
import random
import sys
  
  
class Window(QMainWindow):
  
    def __init__(self):
        super().__init__()
  
        # setting title
        self.setWindowTitle("Python ")
  
        # setting geometry
        self.setGeometry(100, 100, 340, 350)
  
        # calling method
        self.UiComponents()
  
        # showing all the widgets
        self.show()
  
        # number
        self.number = 0
  
    # method for components
    def UiComponents(self):
  
        # creating head label
        head = QLabel("Number Guessing Game", self)
  
        # setting geometry to the head
        head.setGeometry(20, 10, 300, 60)
  
        # font
        font = QFont('Times', 14)
        font.setBold(True)
        font.setItalic(True)
        font.setUnderline(True)
  
        # setting font to the head
        head.setFont(font)
  
        # setting alignment of the head
        head.setAlignment(Qt.AlignCenter)
  
        # setting color effect to the head
        color = QGraphicsColorizeEffect(self)
        color.setColor(Qt.darkCyan)
        head.setGraphicsEffect(color)
  
        # creating a label that will give the info
        self.info = QLabel("Welcome", self)
  
        # setting geometry to the info label
        self.info.setGeometry(40, 85, 260, 60)
  
        # making the info label multi line
        self.info.setWordWrap(True)
  
        # setting font and alignment
        self.info.setFont(QFont('Times', 13))
        self.info.setAlignment(Qt.AlignCenter)
  
        # setting style sheet
        self.info.setStyleSheet("QLabel"
                                "{"
                                "border : 2px solid black;"
                                "background : lightgrey;"
                                "}")
  
        # creating a spin box to set the number
        self.spin = QSpinBox(self)
  
        # setting range to the the spin box
        self.spin.setRange(1, 20)
  
        # setting geometry to the spin box
        self.spin.setGeometry(120, 170, 100, 60)
  
        # setting alignment and font
        self.spin.setAlignment(Qt.AlignCenter)
        self.spin.setFont(QFont('Times', 15))
  
        # creating a push button to check the guess number
        check = QPushButton("Check", self)
  
        # setting geometry to the push button
        check.setGeometry(130, 235, 80, 30)
  
        # adding action to the check button
        check.clicked.connect(self.check_action)
  
        # creating a start button
        start = QPushButton("Start", self)
        start.setGeometry(65, 280, 100, 40)
  
        # reset button to reset the game
        reset_game = QPushButton("Reset", self)
  
        # setting geometry to the push button
        reset_game.setGeometry(175, 280, 100, 40)
  
        # setting color effect
        color_red = QGraphicsColorizeEffect()
        color_red.setColor(Qt.red)
        reset_game.setGraphicsEffect(color_red)
  
        color_green = QGraphicsColorizeEffect()
        color_green.setColor(Qt.darkBlue)
        start.setGraphicsEffect(color_green)
  
        # adding action to the  button
        start.clicked.connect(self.start_action)
        reset_game.clicked.connect(self.reset_action)
  
    def start_action(self):
  
        # making label green
        self.info.setStyleSheet("QLabel"
                                "{"
                                "border : 2px solid black;"
                                "background : lightgrey;"
                                "}")
  
        # creating random number
        self.number = random.randint(1, 20)
  
        # setting text to the info label
        self.info.setText("Try to guess number between 1 to 20")
  
  
    def check_action(self):
  
        # get the spin box number
        user_number = self.spin.value()
  
        # check the value
        if user_number == self.number:
  
            # setting text to the info label
            self.info.setText("Correct Guess")
            # making label green
            self.info.setStyleSheet("QLabel"
                                    "{"
                                    "border : 2px solid black;"
                                    "background : lightgreen;"
                                    "}")
  
        elif user_number < self.number:
  
            # giving hint
            self.info.setText("Your number is smaller")
  
        else:
  
            # giving hint
            self.info.setText("Your number is bigger")
  
  
    def reset_action(self):
        # making label green
        self.info.setStyleSheet("QLabel"
                                "{"
                                "border : 2px solid black;"
                                "background : lightgrey;"
                                "}")
  
        # setting text to the info label
        self.info.setText("Welcome")
  
  
  
  
  
# create pyqt5 app
App = QApplication(sys.argv)
  
# create the instance of our Window
window = Window()
  
# start the app
sys.exit(App.exec())

Output :

 Attention geek! Strengthen your foundations with the Python Programming Foundation Course and learn the basics.  

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