Bundling data files with PyInstaller (–onefile)

Newer versions of PyInstaller do not set the env variable anymore, so Shish’s excellent answer will not work. Now the path gets set as sys._MEIPASS:

def resource_path(relative_path):
    """ Get absolute path to resource, works for dev and for PyInstaller """
        # PyInstaller creates a temp folder and stores path in _MEIPASS
        base_path = sys._MEIPASS
    except Exception:
        base_path = os.path.abspath(".")

    return os.path.join(base_path, relative_path)

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