QFileDialog and QPixmap

Kurtan

Hi , I'm the newer one about Python.
I'm happy to write here about my python issue.
I'm trying to open file and load image,i did something to let it works but i had the syntax error.
What can i do for browsing an image in directory and load it into ?

code# 


from PyQt5 import QtCore, QtGui, QtWidgets
from PyQt5.QtWidgets import QFileDialog,QLabel,QWidget
from PyQt5.QtGui import QPixmap



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.label = QtWidgets.QLabel(self.centralwidget)
        self.label.setGeometry(QtCore.QRect(170, 100, 491, 351))
        self.label.setText("")
        self.label.setPixmap(QPixmap("../../../../../Desktop/Tarih/Native Americans/Flag_of_the_Oneida_Nation_of_Wisconsin.png"))
        self.label.setObjectName("label")
        MainWindow.setCentralWidget(self.centralwidget)
        self.menubar = QtWidgets.QMenuBar(MainWindow)
        self.menubar.setGeometry(QtCore.QRect(0, 0, 800, 21))
        self.menubar.setObjectName("menubar")
        self.menuFile = QtWidgets.QMenu(self.menubar)
        self.menuFile.setObjectName("menuFile")
        MainWindow.setMenuBar(self.menubar)
        self.statusbar = QtWidgets.QStatusBar(MainWindow)
        self.statusbar.setObjectName("statusbar")
        MainWindow.setStatusBar(self.statusbar)
        self.actionOpen = QtWidgets.QAction(MainWindow)
        self.actionOpen.setObjectName("actionOpen")
        self.menuFile.addAction(self.actionOpen)
        self.menubar.addAction(self.menuFile.menuAction())

        self.retranslateUi(MainWindow)
        self.actionOpen.triggered.connect(self.label.show) # type: ignore
        QtCore.QMetaObject.connectSlotsByName(MainWindow)
        
        self.actionOpen.triggered.connect(self.OpenFile)
        self.le = QLabel

    def retranslateUi(self, MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
        self.menuFile.setTitle(_translate("MainWindow", "File "))
        self.actionOpen.setText(_translate("MainWindow", "Open"))
    
    def OpenFile(self):
        options=QFileDialog.Options
        fname = QFileDialog.getOpenFileName(self, 'Open file','c:\\',"Image files (*.jpg *.png)",options=options)
        self.le.setPixmap(QPixmap(fname))
        
        

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_())
_text

I need to work on image process but i already didn't load an image .

jsulm

@Kurtan said in QFileDialog and QPixmap:

i had the syntax error

Please post the error and in which line it occurs

Kurtan

@jsulm This is a syntax Type-Error :

File "C:\Users\user\AppData\Local\Programs\Python\pyqt tutorial\Open.py", line 58, in OpenFile
    fname = QFileDialog.getOpenFileName(self, 'Open file','c:\\',"Image files (*.jpg *.png)",options=options)

TypeError: getOpenFileName(parent: QWidget = None, caption: str = '', directory: str = '', filter: str = '', initialFilter: str = '', options: Union[QFileDialog.Options, QFileDialog.Option] = 0): argument 1 has unexpected type 'Ui_MainWindow'

jsulm

@Kurtan said in QFileDialog and QPixmap:

fname = QFileDialog.getOpenFileName(self,

First argument is wrong: it has to be QWidget or derived class. You are passing Ui_MainWindow which is not derived from QWidget. Either pass None or something derived from QWidget.

SGaist

Hi and welcome to devnet,

If you want to do things cleanly, you should make MainWindow a class and move your OpenFile method there.

On a side note, you should follow either the Qt or the Python coding guidelines, it will make your code easier to read and follow.

Kurtan

@SGaist @jsulm Thank you .I achieved first step to browse and load an image.

CristianMaureira

Also, don't modify the generated file directly and import it, otherwise next time you use uic again, your changed will be overwritten https://doc.qt.io/qtforpython/tutorials/basictutorial/uifiles.html#option-a-generating-a-python-class