What do you think of this procedure to create a path to a folder

[buran]

For your benefit I copy the relevant section here (I make the bold parts for emphasis)

--- EXTRACT FROM PYINSTALER DOCS---

Using __file__

When your program is not bundled, the Python variable __file__ refers to the current path of the module it is contained in. When importing a module from a bundled script, the PyInstaller bootloader will set the module’s __file__ attribute to the correct path relative to the bundle folder.

For example, if you import mypackage.mymodule from a bundled script, then the __file__ attribute of that module will be sys._MEIPASS + 'mypackage/mymodule.pyc'. So if you have a data file at mypackage/file.dat that you added to the bundle at mypackage/file.dat, the following code will get its path (in both the non-bundled and the bundled case):

from os import path
path_to_dat = path.join(path.dirname(__file__), 'file.dat')

In the bundled main script itself the above might not work, as it is unclear where it resides in the package hierarchy. So in when trying to find data files relative to the main script, sys._MEIPASS can be used. The following will get the path to a file other-file.dat next to the main script if not bundled and in the bundle folder if it is bundled:

from os import path
import sys
bundle_dir = getattr(sys, '_MEIPASS', path.abspath(path.dirname(__file__)))
path_to_dat = path.join(bundle_dir, 'other-file.dat')

---- END OF EXTRACT ---

The last snippet show what/how you need to change your code (not the spc file).