module-path 1.0.1

Example

# my_interface.py
# sdl2 with sld2.dll in package
# File Structure:
#     my_sdl/
#         sdl2_dll_path/
#             SDL2.dll
#         __init__.py
#         my_interface.py
import os
from module_path import files, as_file

with as_file(files('my_sdl').joinpath('sdl2_dll_path/SDL2.dll')) as sdl_path:
    os.environ.setdefault('PYSDL2_DLL_PATH', os.path.dirname(str(sdl_path)))
    import sdl2

# Use sdl2
assert sdl2 is not None

check_path/
    __init__.py
    main.py
    check_sub_path
         __init__.py
         fakedata.txt

# check_path/check_sub_path/__init__.py
import os
import module_path

MY_DIR = module_path.my_dir()
DATA = os.path.join(MY_DIR, 'fakedata.txt')
EXISTS = os.path.exists(DATA)

# check_path/main.py
import module_path
try:
    from check_path.check_sub_path import MY_DIR, DATA, EXISTS
except (ImportError, Exception):
    from check_sub_path import MY_DIR, DATA, EXISTS


if __name__ == '__main__':
    path = module_path.my_path()
    directory = module_path.my_dir()
    print('path   \t', path, module_path.exists(path))  # Should be false with executable
    print('dir    \t', directory, module_path.exists(directory))

    print('sub_dir\t', MY_DIR, module_path.exists(MY_DIR))
    print('DATA   \t', DATA, EXISTS)

Build the executable with

pyinstaller --name check_path -y --add-data "check_path/check_sub_path/fakedata.txt;check_path/check_sub_path/" check_path/main.py

After pyinstaller builds you will have a dist directory. The data for this example should be stored in dist/check_path/check_path/check_sub_path/fakedata.txt