How can I open files in external programs in Python? [duplicate]

Answer 1

Use this to open any file with the default program:

import os
def openFile():
    fileName = listbox_1.get(ACTIVE)
    os.system("start " + fileName)

If you really want to use a certain program, such as notepad, you can do it like this:

import os
def openFile():
    fileName = listbox_1.get(ACTIVE)
    os.system("notepad.exe " + fileName)

Also if you need some if checks before opening the file, feel free to add them. This only shows you how to open the file.