Why did you change anything in this file? It reverts my previous commits: 
https://github.com/allegro/ralph_pricing/blob/5aa5aacb6a3a239c7597be36d10b345b1537c80b/src/ralph_pricing/views/ventures.py
and
https://github.com/allegro/ralph_pricing/commit/ccd92af13672bfbc4b18d13a38d802c6e3b5873e