Shortest hash in python to name cache files

Question

What is the shortest hash (in filename-usable form, like a hexdigest) available in python? My application wants to save cache files for some objects. The objects mu

Answer 1

Short hashes mean you may have same hash for two different files. Same may happen for big hashes too, but its way more rare. Maybe these file names should vary based on other references, like microtime (unless these files may be created too quickly).