Error with path of my picture directory PYTHON

Question

I try to access to one of my pictures in one of my directories but i get an error each time. Actually, my folder is like that :

gamefolder:
    lib:
        main.py
        level.py
        othermodules.py
        ...
    data:
        Level1.png
        otherspictures.png

In the primary python file who is main.py, i wrote :

currentpath = os.path.dirname(sys.argv[0]) 
parentpath = os.path.dirname(currentpath) 
sys.path.append(os.path.join(parentpath, 'data'))

But I always get an error in one of my script : level.py called by main.py :

pygame.error: Couldn't open Level_1.png

The code in level.py is like that :

self.image = pygame.image.load('Level1.png').convert_alpha()

I'm not yet familiar with python path .. But it would be so nice if i can arrange that folder like that, which is very elegant !

Thanks to help :)

Answer 1

Try

currentpath = os.path.dirname(os.path.realpath(__file__))
# or 
#currentpath = os.path.dirname(os.path.realpath(sys.argv[0]))

datadir = os.path.join(os.path.dirname(currentpath), 'data')

self.image = pygame.image.load(os.path.join(datadir, 'Level1.png')).convert_alpha()

The path sys.argv[0] can be main.py and its dirname is an empty string

Updated

As the manual of pygame

You should use os.path.join() for compatibility.