tkinter file pattern set in a file dialog

Question

To get the set of expected files with given extensions in a file dialog, I\'ve seen in several places written patterns as (\'label\',\'pattern\'), the pattern b

Answer 1

Use tuple ('.png', '.jpg')

 ('image files', ('.png', '.jpg')),

Answer 2

If you are trying to associate two or more suffixes with a single file type (eg: "image files"), there are a couple of ways to do it.

declare each suffix separately

You can specify each suffix on a separate line. They will be combined into one item in the dropdown list:

filenames = fd.askopenfilenames(
    title="Choose a file",
    filetypes=[('all files', '.*'),
               ('text files', '.txt'),
               ('image files', '.png'),
               ('image files', '.jpg'),
           ])

using a tuple

You can also specify them as a tuple:

filenames = fd.askopenfilenames(
    title="Choose a file",
    filetypes=[('all files', '.*'),
               ('text files', '.txt'),
               ('image files', ('.png', '.jpg')),
           ])

Answer 3

import tkinter
options = {}
options['defaultextension'] = '.txt'
options['filetypes'] = [('all files', '.*'), ('text files', '.txt'),('asc files', '.asc')]
options['initialdir'] = '.'
file_open = tkinter.filedialog.askopenfile(mode='r', **options)