Packing images together with the main file with pyinstaller --onefile problem

Question

I'm building my first program with pyinstaller and I need to add the assets folder to the build, and in the script I use

tk.PhotoImage(file='./image.png')

This works petty good without --onefile

pyinstaller.exe --add-data 'assets;assets' --collect-data sv_ttk .\main.py

But when I use --onefile I have and FileNotFound error.. I think the problem is in using './' in my images, any solution?

Answer 1

Solved with @acw1668 link with

import sys
from os import path

def resource_path(relative_path):
    """ Get absolute path to resource, works for dev and for PyInstaller """
    base_path = getattr(sys, '_MEIPASS', path.dirname(path.abspath(__file__)))
    return path.join(base_path, relative_path)

and all my PhotoImages is now

PhotoImage(file=resource_path('assets/icon.png'))

Now I can build --onefile without problems

*expect to help future users :)