Fix Flakes Errors: openspending/ui/lib/cache.py
Fix Flakes Errors: openspending/ui/lib/cache.py

nathanhilbert/FPA_Core,CivicVision/datahub,johnjohndoe/spendb,CivicVision/datahub,openspending/spendb,CivicVision/datahub,pudo/spendb,johnjohndoe/spendb,openspending/spendb,johnjohndoe/spendb,spendb/spendb,nathanhilbert/FPA_Core,pudo/spendb,spendb/spendb,USStateDept/FPA_Core,pudo/spendb,spendb/spendb,nathanhilbert/FPA_Core,openspending/spendb,USStateDept/FPA_Core,USStateDept/FPA_Core