In repo you can find files with GeoJSON encoded data with polygons describing shapes of Cracow districts (pl: dzielnice Krakowa).
Copy and paste the content into tools like this http://geojson.io/ to check if this is what you were looking for!
krakow-dzielnice.geojson
contains all Cracow's districts together.
The extract_dzielnice.py
script extracts each of krakow-dzielnice.geojson
districts into separate file.
The script requires pip install geojson
(https://pypi.org/project/geojson/)