python pyqt5 add file name to getSaveFileName

Question

I'm trying to add a default name to QFileDialog() the images below illustrate.

This is what I get (no filename)

and this is what I want to achieve without having to input it manually, I want to pass the file_name threw a function and have that name show up there.

This is the code im trying to make to work:

from PyQt5.QtWidgets import *
from PyQt5.QtCore import *
from PyQt5.QtGui import *
from PyQt5 import *
import sys
class mainwindowUI(QMainWindow):
    def __init__(self):
        super(mainwindowUI, self).__init__()
        self.exportFiles('test.mp3')
    def exportFiles(self,file_name):
        filename, _ = QFileDialog.getSaveFileName(self, "Save audio file", "", "Audio Files (*.mp3)")
        if filename:
            print(filename)

if __name__ == '__main__':
    app = QApplication(sys.argv)
    window = mainwindowUI()
    app.exec_()

I tried to add options:

filename, _ = QFileDialog.getSaveFileName(self, "Save audio file", "", "Audio Files (*.mp3)", options=QFileDialog.setLabelText(file_name))

But this is incorrect and i have no idea how to make it work...

Anyone know how to add a file name to save file dialog?

eyllanesc · Accepted Answer · 2020-10-05 19:54:30Z

6

The third argument indicates the initial name:

def exportFiles(self, file_name):
    default_dir ="/home/qt_user/Documents"
    default_filename = os.path.join(default_dir, file_name)
    filename, _ = QFileDialog.getSaveFileName(
        self, "Save audio file", default_filename, "Audio Files (*.mp3)"
    )
    if filename:
        print(filename)

edited Oct 5, 2020 at 19:54

answered Oct 5, 2020 at 19:46

eyllanesc

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3 Comments

JareBear Over a year ago

That works perfectly, but What if I want to add a default directory location?

eyllanesc Over a year ago

@JareBear So you have to concatenate the default directory with the file_name

JareBear Over a year ago

This works perfectly! Exactly what i wanted, thank you so much.

eyllanesc · Accepted Answer · 2020-10-05 19:56:18Z

1

First create a save-as action

self.saveas=QAction(QtGui.QIcon('saveas.png'),'save-as')

Add the save-as action to toolbar

toolbar=self.addToolbar('toolbar');
toolbar.addAction(self.saveas);

Sub this for your QFileDialog code

Fn, _=QFileDialog.getSaveFileName(self,'export pdf',file_name,'Pdf files(.pdf);;All files()');

when connecting the signal to the slot do this

Self.Saveas.toggled.connect(self.exportfiles('name of default file');

edited Oct 5, 2020 at 19:56

eyllanesc

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answered Oct 5, 2020 at 19:53

chidalu okechukwu

274 bronze badges

2 Comments

musicamante Over a year ago

Your answer has some important issues. The toggled signal only works for checkable actions, so in this case the triggered signal should be used instead. That line also has wrong capitalization, the parenthesis is not closed (also, the semicolons are unnecessary) and the argument for the connection should be a callable, while in that case it will execute the call to exportfiles immediately and return None as soon as the dialog is closed, causing a crash.

musicamante Over a year ago

Also, while QAction should accept a constructor without parent, in PyQt (at least up to 5.7) the parent argument is required in the constructor, so it's usually better to add it when creating standalone actions.

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