Welcome folks today in this blog post we will be building a bmi calculator in python using pyqt5 library. All the full source code of the application is shown below.
Get Started
In order to get started you need to install the following libraries using the pip command as shown below
pip install pyqt5
After installing the library you need to make an app.py file and copy paste the following code
app.py
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# -*- coding: utf-8 -*- # Form implementation generated from reading ui file 'ayush.ui' # # Created by: PyQt5 UI code generator 5.11.2 # # WARNING! All changes made in this file will be lost! from PyQt5 import QtCore, QtGui, QtWidgets from PyQt5.QtWidgets import (QWidget, QSlider, QLabel, QApplication) from PyQt5.QtCore import Qt from PyQt5.QtGui import QPixmap import sys class Ui_MainWindow(object): def setupUi(self, MainWindow): MainWindow.setObjectName("MainWindow") MainWindow.resize(927, 506) sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Fixed, QtWidgets.QSizePolicy.Fixed) sizePolicy.setHorizontalStretch(0) sizePolicy.setVerticalStretch(0) sizePolicy.setHeightForWidth(MainWindow.sizePolicy().hasHeightForWidth()) MainWindow.setSizePolicy(sizePolicy) MainWindow.setMinimumSize(QtCore.QSize(927, 506)) MainWindow.setMaximumSize(QtCore.QSize(927, 506)) icon = QtGui.QIcon() icon.addPixmap(QtGui.QPixmap("../Downloads/fb-icon-9.png"), QtGui.QIcon.Normal, QtGui.QIcon.Off) MainWindow.setWindowIcon(icon) self.centralwidget = QtWidgets.QWidget(MainWindow) self.centralwidget.setObjectName("centralwidget") self.plainTextEdit = QtWidgets.QPlainTextEdit(self.centralwidget) self.plainTextEdit.setGeometry(QtCore.QRect(210, 330, 511, 111)) self.plainTextEdit.setObjectName("plainTextEdit") self.pushButton = QtWidgets.QPushButton(self.centralwidget) self.pushButton.setGeometry(QtCore.QRect(420, 250, 93, 28)) self.pushButton.clicked.connect(self.button_click) self.pushButton.setObjectName("pushButton") self.horizontalSlider_2 = QtWidgets.QSlider(self.centralwidget) self.horizontalSlider_2.setGeometry(QtCore.QRect(198, 140, 541, 31)) self.horizontalSlider_2.setOrientation(QtCore.Qt.Horizontal) self.horizontalSlider_2.setFocusPolicy(Qt.NoFocus) self.horizontalSlider_2.setRange(1, 150) self.horizontalSlider_2.valueChanged.connect(self.valu2) self.horizontalSlider_2.setObjectName("horizontalSlider_2") self.lineEdit_2 = QtWidgets.QLineEdit(self.centralwidget) self.lineEdit_2.setGeometry(QtCore.QRect(760, 130, 101, 51)) self.lineEdit_2.setObjectName("lineEdit_2") self.lineEdit_2.textChanged.connect(self.value4) self.label_2 = QtWidgets.QLabel(self.centralwidget) self.label_2.setGeometry(QtCore.QRect(70, 130, 111, 51)) font = QtGui.QFont() font.setPointSize(12) self.label_2.setFont(font) self.label_2.setObjectName("label_2") self.lineEdit = QtWidgets.QLineEdit(self.centralwidget) self.lineEdit.setGeometry(QtCore.QRect(760, 50, 101, 51)) self.lineEdit.setObjectName("lineEdit") self.lineEdit.textChanged.connect(self.value3) self.horizontalSlider = QtWidgets.QSlider(self.centralwidget) self.horizontalSlider.setGeometry(QtCore.QRect(200, 50, 541, 31)) self.horizontalSlider.setOrientation(QtCore.Qt.Horizontal) self.horizontalSlider.setFocusPolicy(Qt.NoFocus) self.horizontalSlider.setRange(1, 200) self.horizontalSlider.valueChanged.connect(self.valu) self.horizontalSlider.setObjectName("horizontalSlider") self.label = QtWidgets.QLabel(self.centralwidget) self.label.setGeometry(QtCore.QRect(70, 50, 91, 31)) font = QtGui.QFont() font.setPointSize(12) self.label.setFont(font) self.label.setObjectName("label") MainWindow.setCentralWidget(self.centralwidget) self.retranslateUi(MainWindow) QtCore.QMetaObject.connectSlotsByName(MainWindow) def valu2(self): self.k = str(self.horizontalSlider_2.value()) self.lineEdit_2.setText(self.k) def valu(self): self.a = str(self.horizontalSlider.value()) self.lineEdit.setText(self.a) def value3(self): self.j=str(self.lineEdit.text()) self.horizontalSlider.setSliderPosition(int(self.j)) if int(self.j)==0: self.horizontalSlider.setSliderPosition(int(1)) def value4(self): self.j=str(self.lineEdit_2.text()) self.horizontalSlider_2.setSliderPosition(int(self.j)) if int(self.j)==0: self.horizontalSlider.setSliderPosition(int(1)) def button_click(self): self.j = int(self.lineEdit_2.text()) self.k = int(self.lineEdit.text()) self.bmi =self.j/((self.k/100)**2) self.string="your body mass index is "+str(self.bmi) print (self.string) self.plainTextEdit.setPlainText(self.string) def retranslateUi(self, MainWindow): _translate = QtCore.QCoreApplication.translate MainWindow.setWindowTitle(_translate("MainWindow", "BMI")) self.pushButton.setText(_translate("MainWindow", "calculate")) self.label_2.setText(_translate("MainWindow", "weight")) self.label.setText(_translate("MainWindow", "height")) if __name__ == "__main__": import sys app = QtWidgets.QApplication(sys.argv) MainWindow = QtWidgets.QMainWindow() ui = Ui_MainWindow() ui.setupUi(MainWindow) MainWindow.show() sys.exit(app.exec_()) |
Now if you run the python script by typing the below command as shown below
python app.py
