Qt for Python

Function declaration: def samFunction(self,value): print("This is sample function call ",value) Function calling: self.samFunction(10) I have PyQt5 installed in my machine.

Check https://www.youtube.com/watch?v=JxfiUx60Mbg https://www.youtube.com/watch?v=2_ycYloRgo4

In 'def checkanswer(self):' you are connecting to the clicked signal again and connecting to the slot nextword ( self.ui.pushButtonEnter.clicked.connect(self.nextword) ) and in 'def nextword(self):' you are connecting to the clicked signal and checkanswer slot ( self.ui.pushButtonEnter.clicked.connect(self.checkanswer) ). If you want to call 2 functions in the button click, connect the clicked signal to the two slots . def __init__(self): super().__init__() self.ui = Ui_MainWindow() self.ui.setupUi(self) self.ui.pushButtonEnter.clicked.connect(self.checkanswer) self.ui.pushButtonEnter.clicked.connect(self.nextword) self.show() and remove self.ui.pushButtonEnter.clicked.connect(self.checkanswer) from 'def nextword(self)' and self.ui.pushButtonEnter.clicked.connect(self.nextword) from 'def checkanswer(self)'

I solved my own problem. I wanted to make it so that I had "Enter your answer" in the text input until the user actually entered something.. BUT you can just select this in QDesigner QTextEdit properties and select 'placeholderText' to properly show a greyed out message prior to input.

@abbm586 please check following video https://www.youtube.com/watch?v=5pSg-naYtXU

Please check following video : https://www.youtube.com/watch?v=wlWqLkvD_Go

Please check following video : https://www.youtube.com/watch?v=_wVDmxUKp4w

Hi and welcome to devnet, @ZagrosCudi said in OpenCv Python Problem PyQt5: if Yuztanima == 1: That looks suspicious. What is the type of Yuztanima and why check whether it equals to 1 ?

I answering myself because I think I found the issue. Seems that sothing was wrong with the file. And because I'm loading the file from the resources was needed to recompile the resources file for changes to the file to applied. I thought that the file read from its path, but seems that from resources is loading an instance of the file and not the file itself. Anyway, seems that my issue solved.

QLocalSocket or Qt Remote Objects for a more high-level API

Finally I managed like this: block = qt.QByteArray(message.payload) out = qt.QDataStream(block, qt.QIODevice.ReadOnly) out.setVersion(qt.QDataStream.Qt_5_10) png = out.readBytes() text = out.readQString() img_np = cv2.imdecode(np.fromstring(png, np.uint8), cv2.IMREAD_COLOR) # cv2.IMREAD_COLOR in OpenCV 3.1 cv2.imshow("test", img_np) I am sending as PNG from Qt C++ . through mqtt . ie: QByteArray blob = file.readAll(); QByteArray ba; if (img_path.contains("png")){ //QImage to convert PNG in memory QImage img(img_path); QBuffer buffer(&ba); buffer.open(QIODevice::WriteOnly); img.save(&buffer, "PNG"); } Bu I am still not sure this is the best way . Because there is mqt server between and things going unpredictable any time which I experienced. python code and the Qt C++ code is in the same machine or at least same switch network. What could be the best way to communicate between them ?