Develop Reference

AttributeError: 'dataAcquisition' object has no attribute 'gpioButton'

I'm trying to connect a push-button on my main window to open a new widget when I click it. But each time I run the program I get this error:
AttributeError: 'dataAcquisition' object has no attribute 'gpioButton'
I will be grateful if someone can help.
Here's my code:
from PyQt4 import QtCore, QtGui
from mainwindow import Ui_MainWindow
from gpiodialog import Ui_GPIODialog
import sys
class gpioDialog(QtGui.QDialog, Ui_GPIODialog):
def __init__(self, parent=None):
QtGui.QDialog.__init__(self, parent)
flags = QtCore.Qt.Drawer | QtCore.Qt.WindowStaysOnTopHint
self.setWidowFlags(flags)
self.ui = Ui_GPIODialog
self.ui.setupUi(self)
self.gpioOKButton.clicked.connect(self.acceptOKButtonClicked)
def acceptOKButtonClicked(self):
self.close()
class dataAcquisition(QtGui.QMainWindow, Ui_MainWindow):
def __init__(self, parent=None):
QtGui.QMainWindow.__init__(self, parent)
self.ui = Ui_MainWindow()
self.ui.setupUi(self)
self.gpioButton.clicked.connect(self.gpioButton_clicked)
self.popGPIO = gpioDialog()
def gpioButton_clicked(self):
self.popGPIO.show()
if __name__ == '__main__':
app = QtGui.QApplication(sys.argv)
MainWindow = dataAcquisition()
MainWindow.show()
sys.exit(app.exec_())
mainwindow.py code:
# -*- coding: utf-8 -*-
# Form implementation generated from reading ui file 'mainwindow.ui'
#
# Created: Tue Oct 18 02:57:57 2016
# by: PyQt4 UI code generator 4.11.2
#
# WARNING! All changes made in this file will be lost!
from PyQt4 import QtCore, QtGui
try:
_fromUtf8 = QtCore.QString.fromUtf8
except AttributeError:
def _fromUtf8(s):
return s
try:
_encoding = QtGui.QApplication.UnicodeUTF8
def _translate(context, text, disambig):
return QtGui.QApplication.translate(context, text, disambig, _encoding)
except AttributeError:
def _translate(context, text, disambig):
return QtGui.QApplication.translate(context, text, disambig)
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName(_fromUtf8("MainWindow"))
MainWindow.resize(700, 600)
MainWindow.setMinimumSize(QtCore.QSize(700, 600))
MainWindow.setMaximumSize(QtCore.QSize(700, 600))
self.centralwidget = QtGui.QWidget(MainWindow)
self.centralwidget.setObjectName(_fromUtf8("centralwidget"))
self.gpioButton = QtGui.QToolButton(self.centralwidget)
self.gpioButton.setGeometry(QtCore.QRect(20, 80, 181, 61))
self.gpioButton.setObjectName(_fromUtf8("gpioButton"))
self.procButton = QtGui.QPushButton(self.centralwidget)
self.procButton.setGeometry(QtCore.QRect(20, 180, 181, 61))
self.procButton.setObjectName(_fromUtf8("procButton"))
self.startButton = QtGui.QPushButton(self.centralwidget)
self.startButton.setEnabled(True)
self.startButton.setGeometry(QtCore.QRect(20, 360, 131, 51))
self.startButton.setObjectName(_fromUtf8("startButton"))
self.stopButton = QtGui.QPushButton(self.centralwidget)
self.stopButton.setGeometry(QtCore.QRect(190, 360, 131, 51))
self.stopButton.setObjectName(_fromUtf8("stopButton"))
self.plotButton = QtGui.QPushButton(self.centralwidget)
self.plotButton.setGeometry(QtCore.QRect(20, 460, 181, 61))
self.plotButton.setObjectName(_fromUtf8("plotButton"))
self.columnView = QtGui.QColumnView(self.centralwidget)
self.columnView.setGeometry(QtCore.QRect(340, 50, 341, 251))
self.columnView.setObjectName(_fromUtf8("columnView"))
self.label_2 = QtGui.QLabel(self.centralwidget)
self.label_2.setGeometry(QtCore.QRect(280, 20, 221, 21))
font = QtGui.QFont()
font.setPointSize(15)
font.setBold(True)
font.setWeight(75)
self.label_2.setFont(font)
self.label_2.setObjectName(_fromUtf8("label_2"))
self.saveButton = QtGui.QPushButton(self.centralwidget)
self.saveButton.setEnabled(True)
self.saveButton.setGeometry(QtCore.QRect(410, 420, 211, 31))
self.saveButton.setObjectName(_fromUtf8("saveButton"))
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtGui.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0, 0, 700, 27))
self.menubar.setObjectName(_fromUtf8("menubar"))
MainWindow.setMenuBar(self.menubar)
self.statusbar = QtGui.QStatusBar(MainWindow)
self.statusbar.setObjectName(_fromUtf8("statusbar"))
MainWindow.setStatusBar(self.statusbar)
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def retranslateUi(self, MainWindow):
MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow", None))
self.gpioButton.setText(_translate("MainWindow", "GPIO Number of inputs", None))
self.procButton.setText(_translate("MainWindow", "Processing", None))
self.startButton.setText(_translate("MainWindow", "Start Acquiring", None))
self.stopButton.setText(_translate("MainWindow", "Stop Acquiring", None))
self.plotButton.setText(_translate("MainWindow", "Start Live Plot", None))
self.label_2.setText(_translate("MainWindow", "Data Acquisition System", None))
self.saveButton.setText(_translate("MainWindow", "Save this session\'s data", None))
if __name__ == "__main__":
import sys
app = QtGui.QApplication(sys.argv)
MainWindow = QtGui.QMainWindow()
ui = Ui_MainWindow()
ui.setupUi(MainWindow)
MainWindow.show()
sys.exit(app.exec_())
gpiodialog.py code:
# -*- coding: utf-8 -*-
# Form implementation generated from reading ui file 'gpiodialog.ui'
#
# Created: Tue Oct 18 03:11:51 2016
# by: PyQt4 UI code generator 4.11.2
#
# WARNING! All changes made in this file will be lost!
from PyQt4 import QtCore, QtGui
try:
_fromUtf8 = QtCore.QString.fromUtf8
except AttributeError:
def _fromUtf8(s):
return s
try:
_encoding = QtGui.QApplication.UnicodeUTF8
def _translate(context, text, disambig):
return QtGui.QApplication.translate(context, text, disambig, _encoding)
except AttributeError:
def _translate(context, text, disambig):
return QtGui.QApplication.translate(context, text, disambig)
class Ui_GPIODialog(object):
def setupUi(self, GPIODialog):
GPIODialog.setObjectName(_fromUtf8("GPIODialog"))
GPIODialog.resize(400, 300)
self.gpioOKButton = QtGui.QPushButton(GPIODialog)
self.gpioOKButton.setGeometry(QtCore.QRect(170, 240, 101, 31))
self.gpioOKButton.setObjectName(_fromUtf8("gpioOKButton"))
self.label = QtGui.QLabel(GPIODialog)
self.label.setGeometry(QtCore.QRect(90, 20, 191, 21))
font = QtGui.QFont()
font.setPointSize(13)
font.setBold(True)
font.setWeight(75)
self.label.setFont(font)
self.label.setObjectName(_fromUtf8("label"))
self.retranslateUi(GPIODialog)
QtCore.QMetaObject.connectSlotsByName(GPIODialog)
def retranslateUi(self, GPIODialog):
GPIODialog.setWindowTitle(_translate("GPIODialog", "Dialog", None))
self.gpioOKButton.setText(_translate("GPIODialog", "OK", None))
self.label.setText(_translate("GPIODialog", "Choose GPIO input bins", None))
if __name__ == "__main__":
import sys
app = QtGui.QApplication(sys.argv)
GPIODialog = QtGui.QDialog()
ui = Ui_GPIODialog()
ui.setupUi(GPIODialog)
GPIODialog.show()
sys.exit(app.exec_())

You created a separate namespace for the ui, so you would need to access the button like this:
self.ui.gpioButton.clicked.connect(self.gpioButton_clicked)
However, if you'd prefer to have all the widgets as attributes of the window, do this:
class gpioDialog(QtGui.QDialog, Ui_GPIODialog):
def __init__(self, parent=None):
super(gpioDialog, self).__init__(parent)
flags = QtCore.Qt.Drawer | QtCore.Qt.WindowStaysOnTopHint
self.setWindowFlags(flags)
self.setupUi(self)
self.gpioOKButton.clicked.connect(self.acceptOKButtonClicked)
class dataAcquisition(QtGui.QMainWindow, Ui_MainWindow):
def __init__(self, parent=None):
super(dataAcquisition, self).__init__(parent)
self.setupUi(self)
self.gpioButton.clicked.connect(self.gpioButton_clicked)
self.popGPIO = gpioDialog()

Qt/PyQt GraphicView

I am trying to recreate some pyqt codes using qt designer.I generated a simple python code using pyuic4.The image should load only in the QgraphicView area but it covers the entire window and I could not see the push buttons.
from PyQt4 import QtCore, QtGui
try:
_fromUtf8 = QtCore.QString.fromUtf8
except AttributeError:
def _fromUtf8(s):
return s
try:
_encoding = QtGui.QApplication.UnicodeUTF8
def _translate(context, text, disambig):
return QtGui.QApplication.translate(context, text, disambig, _encoding)
except AttributeError:
def _translate(context, text, disambig):
return QtGui.QApplication.translate(context, text, disambig)
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName(_fromUtf8("MainWindow"))
MainWindow.resize(608, 526)
self.centralwidget = QtGui.QWidget(MainWindow)
self.centralwidget.setObjectName(_fromUtf8("centralwidget"))
self.widget = QtGui.QWidget(self.centralwidget)
self.widget.setGeometry(QtCore.QRect(300, 20, 258, 244))
self.widget.setObjectName(_fromUtf8("widget"))
self.verticalLayout = QtGui.QVBoxLayout(self.widget)
self.verticalLayout.setObjectName(_fromUtf8("verticalLayout"))
self.graphicsView = QtGui.QGraphicsView(self.widget)
self.graphicsView.setEnabled(True)
self.graphicsView.setMinimumSize(QtCore.QSize(200, 200))
self.graphicsView.setMaximumSize(QtCore.QSize(400, 400))
self.graphicsView.setObjectName(_fromUtf8("graphicsView"))
self.verticalLayout.addWidget(self.graphicsView)
self.horizontalLayout = QtGui.QHBoxLayout()
self.horizontalLayout.setObjectName(_fromUtf8("horizontalLayout"))
self.pushButton = QtGui.QPushButton(self.widget)
self.pushButton.setObjectName(_fromUtf8("pushButton"))
self.horizontalLayout.addWidget(self.pushButton)
self.pushButton_2 = QtGui.QPushButton(self.widget)
self.pushButton_2.setObjectName(_fromUtf8("pushButton_2"))
self.horizontalLayout.addWidget(self.pushButton_2)
self.verticalLayout.addLayout(self.horizontalLayout)
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtGui.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0, 0, 608, 22))
self.menubar.setObjectName(_fromUtf8("menubar"))
MainWindow.setMenuBar(self.menubar)
self.statusbar = QtGui.QStatusBar(MainWindow)
self.statusbar.setObjectName(_fromUtf8("statusbar"))
MainWindow.setStatusBar(self.statusbar)
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def retranslateUi(self, MainWindow):
MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow", None))
self.pushButton.setText(_translate("MainWindow", "PushButton", None))
self.pushButton_2.setText(_translate("MainWindow", "PushButton", None))
and the main file is :
import sys
from PyQt4 import QtCore, QtGui
from graphics_test_output import Ui_MainWindow
class Main(QtGui.QMainWindow,Ui_MainWindow):
def __init__(self):
super(Main,self).__init__()
self.setupUi(self)
self.mw = MainWidget()
self.setCentralWidget(self.mw)
class MainWidget(QtGui.QWidget):
def __init__(self, parent=None):
super(MainWidget,self).__init__(parent)
self.scene = QtGui.QGraphicsScene()
self.view = QtGui.QGraphicsView(self.scene)
layout = QtGui.QVBoxLayout()
layout.addWidget(self.view)
self.setLayout(layout)
self.pixmap_item = QtGui.QGraphicsPixmapItem(QtGui.QPixmap('Image.png'), None, self.scene)
if __name__=='__main__':
app = QtGui.QApplication(sys.argv)
window = Main()
window.show()
sys.exit(app.exec_())
I have added screenshots of ui design and the current output and they would appear.
ui_design:
current_output:

how to create label button in PYQT?

I need your help with my app. I undecorated python gui and now i need to create clicable label.
run.py
from PyQt4 import QtCore, QtGui
import sys
import untitled
class ExampleApp(QtGui.QMainWindow, untitled.Ui_MainWindow):
def __init__(self):
super(self.__class__, self).__init__()
self.setupUi(self)
self.setWindowFlags(QtCore.Qt.FramelessWindowHint)
def main():
app = QtGui.QApplication(sys.argv)
form = ExampleApp()
form.show()
app.exec_()
if __name__ == '__main__':
main()
def closeapp():
sys.exit(0);
untitled.py:
# -*- coding: utf-8 -*-
# Form implementation generated from reading ui file 'untitled.ui'
#
# Created by: PyQt4 UI code generator 4.11.4
#
# WARNING! All changes made in this file will be lost!
from PyQt4 import QtCore, QtGui
try:
_fromUtf8 = QtCore.QString.fromUtf8
except AttributeError:
def _fromUtf8(s):
return s
try:
_encoding = QtGui.QApplication.UnicodeUTF8
def _translate(context, text, disambig):
return QtGui.QApplication.translate(context, text, disambig, _encoding)
except AttributeError:
def _translate(context, text, disambig):
return QtGui.QApplication.translate(context, text, disambig)
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName(_fromUtf8("MainWindow"))
MainWindow.resize(800, 600)
self.centralwidget = QtGui.QWidget(MainWindow)
self.centralwidget.setObjectName(_fromUtf8("centralwidget"))
self.pushButton = QtGui.QPushButton(self.centralwidget)
self.pushButton.setGeometry(QtCore.QRect(40, 110, 85, 30))
self.pushButton.setObjectName(_fromUtf8("pushButton"))
self.label = QtGui.QLabel(self.centralwidget)
self.label.setGeometry(QtCore.QRect(220, 100, 58, 14))
self.label.setObjectName(_fromUtf8("label"))
self.label_2 = QtGui.QLabel(self.centralwidget)
self.label_2.setGeometry(QtCore.QRect(220, 140, 58, 14))
self.label_2.setObjectName(_fromUtf8("label_2"))
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtGui.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0, 0, 800, 26))
self.menubar.setObjectName(_fromUtf8("menubar"))
MainWindow.setMenuBar(self.menubar)
self.statusbar = QtGui.QStatusBar(MainWindow)
self.statusbar.setObjectName(_fromUtf8("statusbar"))
MainWindow.setStatusBar(self.statusbar)
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def retranslateUi(self, MainWindow):
MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow", None))
self.pushButton.setText(_translate("MainWindow", "open", None))
self.label.setText(_translate("MainWindow", "close", None))
self.label_2.setText(_translate("MainWindow", "view", None))
Now I need to add action to label and label_2. How to make the label to perform closeapp()?

Add a function to Ui_MainWindow class (untitled.py)
def click(self,eve):
print "clicked"
Then add attribute to label object
self.label.mousePressEvent = self.click
another option is just modify run.py file like following
class ExampleApp(QtGui.QMainWindow, untitled.Ui_MainWindow):
def click(self,eve):
print "clicked"
def __init__(self):
super(self.__class__, self).__init__()
self.setupUi(self)
self.label.mousePressEvent = self.click
self.setWindowFlags(QtCore.Qt.FramelessWindowHint)

QLabel inherits QWidget. QWidget` has an event handler mousePressEvent
so as E-ebola virus mentioned
add
self.label.mousePressEvent = self.click
and define
def click(self,event):
#do something
or
subclass QLabel
class customLabel(QLabel):
def __init__(self):
QLabel.__init__(self)
def self.mousePressEvent(self,event):
self.emit(SIGNAL("closeapp"))
emit a SIGNAL when label is pressed, i would implement it as
self.label = customLabel()
self.connect(self.label,SIGNAL('closeapp'),self.close)

popup menu on QTreeWidget on right mouse click with python

I'm trying to write a program with python that contains a treewidget and having the ability to add, rename and remove cluster after clicking with the right mouse button on them.
I'm quite new with python and this is my code so far:
from PyQt4 import QtCore, QtGui
try:
_fromUtf8 = QtCore.QString.fromUtf8
except AttributeError:
def _fromUtf8(s):
return s
try:
_encoding = QtGui.QApplication.UnicodeUTF8
def _translate(context, text, disambig):
return QtGui.QApplication.translate(context, text, disambig, _encoding)
except AttributeError:
def _translate(context, text, disambig):
return QtGui.QApplication.translate(context, text, disambig)
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName(_fromUtf8("MainWindow"))
MainWindow.resize(800, 600)
self.centralwidget = QtGui.QWidget(MainWindow)
self.centralwidget.setObjectName(_fromUtf8("centralwidget"))
self.treeWidget = QtGui.QTreeWidget(self.centralwidget)
self.treeWidget.setGeometry(QtCore.QRect(155, 50, 481, 361))
self.treeWidget.setObjectName(_fromUtf8("treeWidget"))
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtGui.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0, 0, 800, 25))
self.menubar.setObjectName(_fromUtf8("menubar"))
MainWindow.setMenuBar(self.menubar)
self.statusbar = QtGui.QStatusBar(MainWindow)
self.statusbar.setObjectName(_fromUtf8("statusbar"))
MainWindow.setStatusBar(self.statusbar)
self.retranslateUi(MainWindow)
self.buildingTree()
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def retranslateUi(self, MainWindow):
MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow", None))
self.treeWidget.headerItem().setText(0, _translate("MainWindow", "Assignment1", None))
__sortingEnabled = self.treeWidget.isSortingEnabled()
def buildingTree(self):
item_0 = QtGui.QTreeWidgetItem(self.treeWidget)
item_1 = QtGui.QTreeWidgetItem(item_0)
item_2 = QtGui.QTreeWidgetItem(item_1)
item_1 = QtGui.QTreeWidgetItem(item_0)
item_2 = QtGui.QTreeWidgetItem(item_1)
self.treeWidget.setSortingEnabled(False)
self.treeWidget.topLevelItem(0).setText(0, _translate("MainWindow", "default", None))
self.treeWidget.topLevelItem(0).child(0).setText(0, _translate("MainWindow", "cluster1", None))
self.treeWidget.topLevelItem(0).child(0).child(0).setText(0, _translate("MainWindow", "clusterA", None))
self.treeWidget.topLevelItem(0).child(1).setText(0, _translate("MainWindow", "cluster2", None))
self.treeWidget.topLevelItem(0).child(1).child(0).setText(0, _translate("MainWindow", "clusterA", None))
if __name__ == "__main__":
import sys
app = QtGui.QApplication(sys.argv)
MainWindow = QtGui.QMainWindow()
ui = Ui_MainWindow()
ui.setupUi(MainWindow)
MainWindow.show()
sys.exit(app.exec_())
Could someone please tell me how do I open a popup menu after clicking with the right mouse button on a certain cluster?
Thank you in advance!

I have found an answer.
It looks like this:
def new_cluster(self):
print "New Cluster"
def rename_cluster(self):
print "Rename cluster"
def delete_cluster(self):
print "Delete cluster"
def create_popup_menu(self, parent=None):
self.popup_menu = QtGui.QMenu(parent)
self.popup_menu.addAction("New", self.new_cluster)
self.popup_menu.addAction("Rename", self.rename_cluster)
self.popup_menu.addSeparator()
self.popup_menu.addAction("Delete", self.delete_cluster)
def on_context_menu(self, pos):
node = self.treeWidget.mapToGlobal(pos)
self.popup_menu.exec_(self.treeWidget.mapToGlobal(pos))

python qt4 isn't working

I have watched this video and then i created succesfully hello.py. But i run hello.py , doesn't show a form. I need to help. I haven't taken any error ever.
After I have created interface in qt designer,i created hello.py script. "C:\Python27\Lib\site-packages\PyQt4\pyuic4.bat" hello.ui -o hello.py
The codes is below :
from PyQt4 import QtCore, QtGui
try:
_fromUtf8 = QtCore.QString.fromUtf8
except AttributeError:
def _fromUtf8(s):
return s
try:
_encoding = QtGui.QApplication.UnicodeUTF8
def _translate(context, text, disambig):
return QtGui.QApplication.translate(context, text, disambig, _encoding)
except AttributeError:
def _translate(context, text, disambig):
return QtGui.QApplication.translate(context, text, disambig)
class Ui_Form(object):
def setupUi(self, Form):
Form.setObjectName(_fromUtf8("Form"))
Form.resize(509, 312)
self.gridLayout = QtGui.QGridLayout(Form)
self.gridLayout.setObjectName(_fromUtf8("gridLayout"))
self.verticalLayout = QtGui.QVBoxLayout()
self.verticalLayout.setObjectName(_fromUtf8("verticalLayout"))
self.label = QtGui.QLabel(Form)
self.label.setObjectName(_fromUtf8("label"))
self.verticalLayout.addWidget(self.label)
self.horizontalLayout = QtGui.QHBoxLayout()
self.horizontalLayout.setObjectName(_fromUtf8("horizontalLayout"))
self.lineEdit = QtGui.QLineEdit(Form)
self.lineEdit.setObjectName(_fromUtf8("lineEdit"))
self.horizontalLayout.addWidget(self.lineEdit)
self.pushButton = QtGui.QPushButton(Form)
self.pushButton.setObjectName(_fromUtf8("pushButton"))
self.horizontalLayout.addWidget(self.pushButton)
self.verticalLayout.addLayout(self.horizontalLayout)
self.gridLayout.addLayout(self.verticalLayout, 0, 0, 1, 1)
self.retranslateUi(Form)
QtCore.QObject.connect(self.pushButton, QtCore.SIGNAL(_fromUtf8("clicked()")), self.label.clear)
QtCore.QObject.connect(self.lineEdit, QtCore.SIGNAL(_fromUtf8("textChanged(QString)")), self.label.setText)
QtCore.QObject.connect(self.pushButton, QtCore.SIGNAL(_fromUtf8("clicked()")), self.lineEdit.clear)
QtCore.QMetaObject.connectSlotsByName(Form)
def retranslateUi(self, Form):
Form.setWindowTitle(_translate("Form", "Form", None))
self.label.setText(_translate("Form", "Hello World", None))
self.pushButton.setText(_translate("Form", "PushButton", None))

You need to instantiate your object and set it up. Adding this at the bottom of your current code will show the form.
import sys
class MyForm(QtGui.QMainWindow):
def __init__(self, parent=None):
QtGui.QWidget.__init__(self, parent)
self.ui = Ui_Form()
self.ui.setupUi(self)
def execute_event(self):
pass
def execute_all_event(self):
pass
def reload_event(self):
pass
if __name__ == "__main__":
app = QtGui.QApplication(sys.argv)
myapp = MyForm()
myapp.show()
sys.exit(app.exec_())
This answer was from a similar question.