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Variable scopes in Python classes
(4 answers)
Closed 2 years ago.
I have a situation in which I want a dialogue box to appear when a button is clicked. I used Qt designer to create a main window as well as a dialogue box. By looking at some online tutorials and answers on StackOverflow I managed to write this code
from PyQt5 import QtCore, QtGui, QtWidgets
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(557, 383)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.pushButton = QtWidgets.QPushButton(self.centralwidget)
self.pushButton.setGeometry(QtCore.QRect(180, 70, 201, 81))
self.pushButton.setObjectName("pushButton")
self.pushButton.clicked.connect(self.newWindow)
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtWidgets.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0, 0, 557, 21))
self.menubar.setObjectName("menubar")
MainWindow.setMenuBar(self.menubar)
self.statusbar = QtWidgets.QStatusBar(MainWindow)
self.statusbar.setObjectName("statusbar")
MainWindow.setStatusBar(self.statusbar)
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
self.pushButton.setText(_translate("MainWindow", "new window"))
def newWindow(self):
dialog = QtWidgets.QDialog()
self.myOtherWindow = Ui_Dialog()
self.myOtherWindow.setupUi(dialog)
dialog.show()
class Ui_Dialog(object):
def setupUi(self, Dialog):
Dialog.setObjectName("Dialog")
Dialog.resize(400, 300)
self.retranslateUi(Dialog)
QtCore.QMetaObject.connectSlotsByName(Dialog)
def retranslateUi(self, Dialog):
_translate = QtCore.QCoreApplication.translate
Dialog.setWindowTitle(_translate("Dialog", "Dialog"))
if __name__ == "__main__":
import sys
if not QtWidgets.QApplication.instance():
app = QtWidgets.QApplication(sys.argv)
else:
app = QtWidgets.QApplication.instance()
MainWindow = QtWidgets.QMainWindow()
ui = Ui_MainWindow()
ui.setupUi(MainWindow)
MainWindow.show()
sys.exit(app.exec_())
The problem is that when I click the pushbutton, the dialogue box appears for an instance and then disappears. What am I missing?
WARNING! Never change the .ui file
All changes made in this file will be lost!
from PyQt5 import QtCore, QtGui, QtWidgets
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(557, 383)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.pushButton = QtWidgets.QPushButton(self.centralwidget)
self.pushButton.setGeometry(QtCore.QRect(180, 70, 201, 81))
self.pushButton.setObjectName("pushButton")
self.pushButton.clicked.connect(self.newWindow)
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtWidgets.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0, 0, 557, 21))
self.menubar.setObjectName("menubar")
MainWindow.setMenuBar(self.menubar)
self.statusbar = QtWidgets.QStatusBar(MainWindow)
self.statusbar.setObjectName("statusbar")
MainWindow.setStatusBar(self.statusbar)
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
self.pushButton.setText(_translate("MainWindow", "new window"))
"""
def newWindow(self):
self.dialog = QtWidgets.QDialog()
self.myOtherWindow = Ui_Dialog()
self.myOtherWindow.setupUi(self.dialog)
self.dialog.show()
"""
class MainWindow(QtWidgets.QMainWindow, Ui_MainWindow):
def __init__(self, parent=None):
super(MainWindow, self).__init__(parent)
self.setupUi(self)
def newWindow(self):
dialog = QtWidgets.QDialog()
dialog.setWindowTitle("Dialog")
dialog.setGeometry(800, 300, 400, 300)
dialog.exec_()
if __name__ == "__main__":
import sys
if not QtWidgets.QApplication.instance():
app = QtWidgets.QApplication(sys.argv)
else:
app = QtWidgets.QApplication.instance()
window = MainWindow()
window.show()
sys.exit(app.exec_())
Related
I am new to PyQt5 and have a simple code where one window opens another. The second window contains pushbutton, which after pressing should print a message "push button clicked". The pushbutton works when the second window is called separately and not from the mainwindow. However, when the second window is called by the mainwindow, the pushbutton does nothing.
Code:
from PyQt5 import QtCore, QtGui, QtWidgets
class Ui_Form(object):
def setupUi(self, Form):
Form.setObjectName("Form")
Form.resize(400, 300)
self.label = QtWidgets.QLabel(Form)
self.label.setGeometry(QtCore.QRect(110, 30, 211, 111))
self.label.setObjectName("label")
self.pushButton = QtWidgets.QPushButton(Form)
self.pushButton.setGeometry(QtCore.QRect(140, 200, 75, 23))
self.pushButton.setObjectName("pushButton")
self.pushButton.clicked.connect(self.print_method)
self.retranslateUi(Form)
QtCore.QMetaObject.connectSlotsByName(Form)
def retranslateUi(self, Form):
_translate = QtCore.QCoreApplication.translate
Form.setWindowTitle(_translate("Form", "Form"))
self.label.setText(_translate("Form", "This is another Window"))
self.pushButton.setText(_translate("Form", "PushButton"))
def print_method(self):
print("push button clicked")
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(800, 600)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.pushButton = QtWidgets.QPushButton(self.centralwidget)
self.pushButton.setGeometry(QtCore.QRect(300, 190, 191, 91))
self.pushButton.setObjectName("pushButton")
self.pushButton.clicked.connect(self.show_new_window)
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtWidgets.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0, 0, 800, 21))
self.menubar.setObjectName("menubar")
MainWindow.setMenuBar(self.menubar)
self.statusbar = QtWidgets.QStatusBar(MainWindow)
self.statusbar.setObjectName("statusbar")
MainWindow.setStatusBar(self.statusbar)
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
self.pushButton.setText(_translate("MainWindow", "Another Window"))
def show_new_window(self):
self.Form = QtWidgets.QWidget()
ui = Ui_Form()
ui.setupUi(self.Form)
self.Form.show()
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_())
It doesn't work because the ui object has no reference, so it gets deleted as soon as show_new_window returns. The result is that since the print_method function is a member of Ui_Form, it doesn't get called because that instance has been deleted.
A possibility could be to make the ui an attribute of the QWidget:
def show_new_window(self):
self.Form = QtWidgets.QWidget()
self.Form.ui = Ui_Form()
self.Form.ui.setupUi(self.Form)
self.Form.show()
In any case, be aware that manually editing files generated by pyuic (or trying to mimic their behavior) is considered bad practice and highly discouraged, as it might lead to confusion and unexpected behavior. Read more about this topic on the official guidelines about using Designer.
I am trying to make a program that has a loop inside of it. I think that the problem is that one the loop starts the program just loops inside of it.
CODE -
from PyQt5 import QtCore, QtGui, QtWidgets
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(319, 258)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.checkBox = QtWidgets.QCheckBox(self.centralwidget)
self.checkBox.setGeometry(QtCore.QRect(20, 60, 281, 51))
self.checkBox.setObjectName("checkBox")
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtWidgets.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0, 0, 319, 21))
self.menubar.setObjectName("menubar")
MainWindow.setMenuBar(self.menubar)
self.statusbar = QtWidgets.QStatusBar(MainWindow)
self.statusbar.setObjectName("statusbar")
MainWindow.setStatusBar(self.statusbar)
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
self.checkBox.setText(_translate("MainWindow", "CheckBox"))
self.checkBox.clicked.connect(self.potato)
def potato(self, value):
while self.checkBox.isChecked:
print('potato')
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_())```
Do not modify the code generated by Qt Designer but create another class that inherits
from the appropriate widget and use the initial class to fill it.
The while loop is blocking the interface, use a QTimer or extra thread, signals and slots.
from PyQt5 import QtCore, QtGui, QtWidgets
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(319, 258)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.checkBox = QtWidgets.QCheckBox(self.centralwidget)
self.checkBox.setGeometry(QtCore.QRect(20, 60, 281, 51))
self.checkBox.setObjectName("checkBox")
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtWidgets.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0, 0, 319, 21))
self.menubar.setObjectName("menubar")
MainWindow.setMenuBar(self.menubar)
self.statusbar = QtWidgets.QStatusBar(MainWindow)
self.statusbar.setObjectName("statusbar")
MainWindow.setStatusBar(self.statusbar)
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
self.checkBox.setText(_translate("MainWindow", "CheckBox"))
class Demo(QtWidgets.QMainWindow, Ui_MainWindow):
def __init__(self):
super().__init__()
self.setupUi(self)
self.checkBox.clicked.connect(self.potato)
self.timer = QtCore.QTimer()
self.timer.timeout.connect(self.on_timer)
def potato(self, value):
if value:
self.timer.start(1000)
else:
self.timer.stop()
def on_timer(self):
print('potato')
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
w = Demo()
w.show()
sys.exit(app.exec_())
Can't understand why I'm getting the empty string from the text field, here is my code:
class MyMainWindow(QMainWindow, test.Ui_MainWindow):
def __init__(self):
super().__init__()
super().setupUi(self)
self.pushButton.clicked.connect(self.click)
def click(self):
text = self.plainTextEdit.toPlainText()
print('Text: ' + str(text))
print()
if __name__ == '__main__':
app = QApplication(sys.argv)
window = QMainWindow()
mainWindow = MyMainWindow()
mainWindow.setupUi(window)
mainWindow.show()
sys.exit(app.exec_())
https://pastebin.com/gpDSysL2
and the generated by QT Designer .py file:
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(800, 600)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.plainTextEdit = QtWidgets.QPlainTextEdit(self.centralwidget)
self.plainTextEdit.setGeometry(QtCore.QRect(270, 260, 104, 71))
self.plainTextEdit.setObjectName("plainTextEdit")
self.pushButton = QtWidgets.QPushButton(self.centralwidget)
self.pushButton.setGeometry(QtCore.QRect(270, 350, 75, 23))
self.pushButton.setObjectName("pushButton")
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtWidgets.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0, 0, 800, 21))
self.menubar.setObjectName("menubar")
MainWindow.setMenuBar(self.menubar)
self.statusbar = QtWidgets.QStatusBar(MainWindow)
self.statusbar.setObjectName("statusbar")
MainWindow.setStatusBar(self.statusbar)
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
self.pushButton.setText(_translate("MainWindow", "PushButton"))
when im clicking on the button it printing the empy string
here is the screenshot of the issue im getting >>> Screenshot
will be very appreciated for you any help
problem was in double calling setupUI() method:
if __name__ == '__main__':
app = QApplication(sys.argv)
window = QMainWindow()
mainWindow = MyMainWindow()
# mainWindow.setupUi(window) <<< HERE WAS THE PROBLEM, JUST DELETEd THIS LINE AND THATS ALL
mainWindow.show()
sys.exit(app.exec_())
maybe somebody will have same issue
I have created two simple windows using qt5 designer. In first window there is a button which opens the second window. When the second window opens the button in it which prints a simple text is not working. I have read other post but no one has used qt5 designer!
from PyQt5 import QtCore, QtGui, QtWidgets
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
self.window = MainWindow
MainWindow.setObjectName("MainWindow")
MainWindow.resize(800, 600)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.pushButton = QtWidgets.QPushButton(self.centralwidget)
self.pushButton.setGeometry(QtCore.QRect(290, 230, 181, 29))
self.pushButton.setObjectName("pushButton")
self.pushButton.clicked.connect(self.opensecondwindow)
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtWidgets.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0, 0, 800, 23))
self.menubar.setObjectName("menubar")
MainWindow.setMenuBar(self.menubar)
self.statusbar = QtWidgets.QStatusBar(MainWindow)
self.statusbar.setObjectName("statusbar")
MainWindow.setStatusBar(self.statusbar)
self.retranslateUi(MainWindow)
# QtCore.QMetaObject.connectSlotsByName(MainWindow)
def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "First Page"))
self.pushButton.setText(_translate("MainWindow", "Open Second Page"))
def opensecondwindow(self):
import secondpage as scp
ui = scp.Ui_MainWindow()
ui.setupUi(self.window)
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(800, 600)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.pushButton = QtWidgets.QPushButton(self.centralwidget)
self.pushButton.setGeometry(QtCore.QRect(280, 240, 211, 71))
self.pushButton.setObjectName("pushButton")
self.pushButton.clicked.connect(self.openfirstwindow)
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtWidgets.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0, 0, 800, 23))
self.menubar.setObjectName("menubar")
MainWindow.setMenuBar(self.menubar)
self.statusbar = QtWidgets.QStatusBar(MainWindow)
self.statusbar.setObjectName("statusbar")
MainWindow.setStatusBar(self.statusbar)
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "Second Page"))
self.pushButton.setText(_translate("MainWindow", "Print Data"))
def openfirstwindow(self):
print("Hi from second window")
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_())
any help would be appreciated!
thanks in advance
First, you two classes have the same name Ui_MainWindow.
One option to print what you want might look like this:
from PyQt5 import QtCore, QtGui, QtWidgets
# class Ui_MainWindow(object):
class Ui_MainWindow_First(object): # + _First
def setupUi(self, MainWindow):
# self.window = MainWindow
MainWindow.setObjectName("MainWindow")
MainWindow.resize(800, 600)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.pushButton = QtWidgets.QPushButton(self.centralwidget)
self.pushButton.setGeometry(QtCore.QRect(290, 230, 181, 29))
self.pushButton.setObjectName("pushButton")
self.pushButton.clicked.connect(self.opensecondwindow)
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtWidgets.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0, 0, 800, 23))
self.menubar.setObjectName("menubar")
MainWindow.setMenuBar(self.menubar)
self.statusbar = QtWidgets.QStatusBar(MainWindow)
self.statusbar.setObjectName("statusbar")
MainWindow.setStatusBar(self.statusbar)
self.retranslateUi(MainWindow)
# QtCore.QMetaObject.connectSlotsByName(MainWindow)
def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "First Page"))
self.pushButton.setText(_translate("MainWindow", "Open Second Page"))
def opensecondwindow(self):
# import secondpage as scp
# ui = scp.Ui_MainWindow()
# self.ui = Ui_MainWindow_Second()
### vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
self.w = QtWidgets.QMainWindow()
w_ui = Ui_MainWindow_Second()
w_ui.setupUi(self.w)
self.w.show()
w_ui.pushButton.clicked.connect(self.openfirstwindow)
def openfirstwindow(self):
print("Hi from second window")
### ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
# class Ui_MainWindow(object):
class Ui_MainWindow_Second(object): # + _Second
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(800, 600)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.pushButton = QtWidgets.QPushButton(self.centralwidget)
self.pushButton.setGeometry(QtCore.QRect(280, 240, 211, 71))
self.pushButton.setObjectName("pushButton")
# self.pushButton.clicked.connect(self.openfirstwindow)
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtWidgets.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0, 0, 800, 23))
self.menubar.setObjectName("menubar")
MainWindow.setMenuBar(self.menubar)
self.statusbar = QtWidgets.QStatusBar(MainWindow)
self.statusbar.setObjectName("statusbar")
MainWindow.setStatusBar(self.statusbar)
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "Second Page"))
self.pushButton.setText(_translate("MainWindow", "Print Data"))
# def openfirstwindow(self): #(self):
# print("Hi from second window")
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
MainWindow = QtWidgets.QMainWindow()
# ui = Ui_MainWindow()
ui = Ui_MainWindow_First() # Ui_MainWindow_First
ui.setupUi(MainWindow)
MainWindow.show()
sys.exit(app.exec_())
I have a simple pyqt UI in which there is a table widget. I want the widget to resize when I resize the main window. There is a similar question posted on stackOverflow (Resizing table columns when window is maximized), but the answers given do not solve my purpose. In particular I tried usingself.tableWidget.horizontalHeader().setSectionResizeMode(QtWidgets.QHeaderView.Stretch)
. It resizes the column width of the table according to the table widget geometry but does not resize the widget itself when I resize the main window. I'm using pyqt5 and spyder IDE.
Here is an example
from PyQt5 import QtCore, QtGui, QtWidgets
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(566, 475)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.tableWidget = QtWidgets.QTableWidget(self.centralwidget)
self.tableWidget.setWindowTitle("Transactional Data")
self.tableWidget.setGeometry(QtCore.QRect(60, 30, 461, 381))
self.tableWidget.setObjectName("tableWidget")
self.tableWidget.setColumnCount(7)
self.tableWidget.setRowCount(5)
self.tableWidget.setAlternatingRowColors(True)
self.tableWidget.horizontalHeader().setSectionResizeMode(QtWidgets.QHeaderView.Stretch)
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtWidgets.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0, 0, 566, 21))
self.menubar.setObjectName("menubar")
MainWindow.setMenuBar(self.menubar)
self.statusbar = QtWidgets.QStatusBar(MainWindow)
self.statusbar.setObjectName("statusbar")
MainWindow.setStatusBar(self.statusbar)
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
if __name__ == "__main__":
import sys
if not QtWidgets.QApplication.instance():
app = QtWidgets.QApplication(sys.argv)
else:
app = QtWidgets.QApplication.instance()
MainWindow = QtWidgets.QMainWindow()
ui = Ui_MainWindow()
ui.setupUi(MainWindow)
MainWindow.show()
sys.exit(app.exec_())
Try it:
from PyQt5 import QtCore, QtGui, QtWidgets
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(566, 475)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.horizontalLayout_2 = QtWidgets.QHBoxLayout(self.centralwidget)
self.horizontalLayout_2.setObjectName("horizontalLayout_2")
self.verticalLayout_2 = QtWidgets.QVBoxLayout()
self.verticalLayout_2.setObjectName("verticalLayout_2")
self.horizontalLayout_2.addLayout(self.verticalLayout_2)
self.tableWidget = QtWidgets.QTableWidget(self.centralwidget)
self.tableWidget.setObjectName("tableWidget")
self.verticalLayout_2.addWidget(self.tableWidget)
self.tableWidget.setWindowTitle("Transactional Data")
self.tableWidget.setColumnCount(7)
self.tableWidget.setRowCount(5)
self.tableWidget.setAlternatingRowColors(True)
self.tableWidget.setHorizontalHeaderLabels(['A','B','C','D','E','F','G'])
self.tableWidget.horizontalHeader().setSectionResizeMode(QtWidgets.QHeaderView.Stretch)
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtWidgets.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0, 0, 800, 24))
self.menubar.setObjectName("menubar")
MainWindow.setMenuBar(self.menubar)
self.statusbar = QtWidgets.QStatusBar(MainWindow)
self.statusbar.setObjectName("statusbar")
MainWindow.setStatusBar(self.statusbar)
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
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_())