File "app.py", line 1, in <module>
    from app.app_factory import create_app
  File "/home/przemek/Documents/TSP/tsp/app/__init__.py", line 1, in <module>
    from .app_factory import create_app
  File "/home/przemek/Documents/TSP/tsp/app/app_factory.py", line 74
    marks={(5 * (i+1)): f'{5 * (i+1)}s' for i in range(13)}),
                                      ^
SyntaxError: invalid syntax