How to make filename/path from Gtk+ (Python 3.4) FileChooserDialog accessible globally

Question

I've got some code that uses the Gtk+ FileChooserDialog in Python 3.4 to allow a user to select a file.

Then, it's supposed to close the dialog (obviously) and continue executing the code that follows the user choosing a file. However, what happens is that the user selects their file, and the code continues, but the dialog doesn't disappear like it should.

I had this issue previously, and we figured out the reason why it was happening then and resolved it, but now it's happening again and although I know what's causing, I don't know how to actually resolve it.

Here's my code:

from gi.repository import Gtk class FileChooser(): def __init__(self): global path dia = Gtk.FileChooserDialog("Please choose a file", None, Gtk.FileChooserAction.OPEN, (Gtk.STOCK_CANCEL, Gtk.ResponseType.CANCEL, Gtk.STOCK_OPEN, Gtk.ResponseType.OK)) self.add_filters(dia) response = dia.run() if response == Gtk.ResponseType.OK: print("Open clicked") print("File selected: " + dia.get_filename()) path = dia.get_filename() elif response == Gtk.ResponseType.CANCEL: print("Cancel clicked") dia.destroy() def add_filters(self, dia): filter_any = Gtk.FileFilter() filter_any.set_name("Any files") filter_any.add_pattern("*") dia.add_filter(filter_any) filter_text = Gtk.FileFilter() filter_text.set_name('Text files') filter_text.add_mime_type('text/plain') dia.add_filter(filter_text) filter_py = Gtk.FileFilter() filter_py.set_name('Python files') filter_py.add_mime_type('text/x-python') dia.add_filter(filter_py) filter_img = Gtk.FileFilter() filter_img.set_name('Image') filter_img.add_mime_type('image/*') dia.add_filter(filter_img) dialog = FileChooser() # path variable will be used after this point

The issue here is that, for reasons unknown to me, if I have the global path declaration in the FileChooser() class' __init__() function, the dialog won't disappear.

If I remove that global path declaration, the dialog goes away, but I get a NameError: name 'path' is not defined later in the program when I try to access the path variable!

I have also tried making path global right at the start of the program, but I still get the NameError.

What can I do to make this variable accessible later in my program, while still making the dialog disappear?

little note : self.path must be renamed to self.fpath or something, because every gtk widget has already a path attribute. — no___name
– no___name, Commented Apr 13, 2020 at 14:55

Nagaraj Tantri · Accepted Answer · 2015-05-01 01:11:28Z

Consider the path variable as an instance to FileChooser(). It provides a logical end to have path accessed by the dialog that is representing the FileChooser().

class FileChooser(): def __init__(self): #Stores your path self.path = None dia = Gtk.FileChooserDialog("Please choose a file", None, Gtk.FileChooserAction.OPEN, (Gtk.STOCK_CANCEL, Gtk.ResponseType.CANCEL, Gtk.STOCK_OPEN, Gtk.ResponseType.OK)) self.add_filters(dia) response = dia.run() if response == Gtk.ResponseType.OK: print("Open clicked") print("File selected: " + dia.get_filename()) self.path = dia.get_filename() elif response == Gtk.ResponseType.CANCEL: print("Cancel clicked") dia.destroy()

When you create the object.

dialog = FileChooser()

You can access it as follows:

dialog.path

facepalm Sometimes, I can be a real genius... Thanks for pointing out the obvious to me :) +1/accept :P
@RPiAwesomeness Trust me even I have faced those situations :)

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