Example of selecting files in the filemanager of mac, windows and linux

select.py

import sys
import subprocess


def select_file(path):

    if sys.platform == 'darwin':
        subprocess.run(['open', '-R', path])
    elif sys.platform == 'linux':
        subprocess.run(['nautilus', path])
    else:
        command = 'C:\\windows\\explorer /select,"{}"'.format(path)
        print(command)
        subprocess.run([command])

    print("{}: {}".format(sys.platform, path))


file = '/home/chrisg/Pictures/Qt_logo_2016.svg.png'
select_file(file)