change to pypy3
change to pypy3

pebble/cloudpebble-buildpack,grivescorbett/heroku-buildpack-python,joshfriend/heroku-buildpack-python,jimlindeman/python-buildpack-collectd,nemesiscodex/heroku-buildpack-python,arnaudlimbourg/heroku-buildpack-python,brightforme/heroku-buildpack-python,maxcountryman/heroku-buildpack-python,oberlin/heroku-buildpack-python,monological/heroku-buildpack-python-opencv,samuelhavron/heroku-buildpack-python,stalnacke/heroku-buildpack-python,pkumar-appd/python-buildpack,rollokb/heroku-buildpack-python,heroku/heroku-buildpack-python,doda/heroku-buildpack-python,gitricko/apt-python-buildpack,tommyvn/heroku-buildpack-python,resmio/heroku-buildpack-geodjango,junyoed/heroku-buildpack-python,cloudfoundry/python-buildpack,Scalingo/python-buildpack,jimlindeman/python-buildpack-collectd,dubsmash/heroku-buildpack-python,WonderThink/heroku-buildpack-python-ffmpeg-geoip,thenovices/heroku-buildpack-scipy,edenspiekermann-amsterdam/heroku-buildpack-python,pkumar-appd/python-buildpack,predata/heroku-buildpack-scipy,samuelhavron/heroku-buildpack-python,wbrefvem/heroku-buildpack-python,samuelhavron/heroku-buildpack-python,samuelhavron/heroku-buildpack-python,blazekadam/open2,joshisa/python-buildpack,liyanchang/cloudfoundary-buildbot-buildpack,vlidholt/heroku-buildpack-scipy,skilljar/heroku-buildpack-python,gaumire/heroku-buildpack-python,cortexintel/heroku-buildpack-scipy,swils/heroku-buildpack-python,andrespires/python-buildpack,igroff/heroku-buildpack-python,smalleats/heroku-buildpack-python,zakdoek/heroku-buildpack-django,jvenezia/heroku-buildpack-python,TipWander/heroku-buildpack-geodjango,HousekeepLtd/heroku-buildpack-python,adamroth/heroku-buildpack-python-pdftk,benjaminfox/heroku-buildpack-python-geoip,Tiger66639/buildbot-master-buildpack,nwkotto/geodjango-buildpack-with-geos,buildbot/buildbot-master-buildpack,ad-m/heroku-buildpack-python,driftyco/heroku-buildpack-sphinx,alexflanagan/operand-buildpack-python,manufacturedba/heroku-buildpack-python,kvarga/heroku-buildpack-python,ywarezk/heroku-buildpack-geodjango,ad-m/heroku-buildpack-python,lukaszkorecki/heroku-buildpack-python,liyanchang/cloudfoundary-buildbot-buildpack,kowito/python-buildpack,wbrefvem/heroku-buildpack-python,doda/heroku-buildpack-python,rapilabs/heroku-buildpack-python,andrespires/python-buildpack,alexflanagan/operand-buildpack-python,bobsilverberg/heroku-buildpack-python-peep,gitricko/apt-python-buildpack,gitricko/apt-python-buildpack,Nazanin84/python-buildpack,loanzen/heroku-buildpack-python,projetoeureka/heroku-buildpack-scipy,ryanhiebert/heroku-buildpack-python,nicktimko/heroku-buildpack-scipy,river-jade/heroku-buildpack-scipy,cloudfoundry/python-buildpack,mythmon/heroku-buildpack-python-nodejs,ojacobson/heroku-buildpack-python,jamarparris/heroku-buildpack-python-swig,samuelhavron/heroku-buildpack-python,marianzange/heroku-buildpack-python,pwdel1/heroku-buildpack-scipy,Stibbons/heroku-buildpack-python-installer,andrespires/python-buildpack,kowito/python-buildpack,AltSchool/heroku-buildpack-python,marcospy/heroku-buildpack-scipy,samuelhavron/heroku-buildpack-python,ekkleesia2/heroku-buildpack-python,beni55/heroku-buildpack-python,mobify/heroku-buildpack-python-swig,pkumar-appd/python-buildpack,marcospy/hackathon-globo-app,Mause/heroku-buildpack-python,liyanchang/cloudfoundary-buildbot-buildpack,benmurden/heroku-buildpack-python-ember,marcospy/hackathon-globo-app,Scalingo/python-buildpack,joshisa/python-buildpack,joshowen/heroku-buildpack-python,heroku/heroku-buildpack-python,agriffis/heroku-buildpack-python,Nazanin84/python-buildpack,18F/python-buildpack,brianthomas/heroku-buildpack-textmining,jimlindeman/python-buildpack-collectd,YoApp/heroku-buildpack-python-twemproxy,benmurden/heroku-buildpack-python-ember,Nazanin84/python-buildpack,edmorley/heroku-buildpack-python,Brogency/heroku-buildpack-python-gulp,18F/python-buildpack,zakdoek/heroku-buildpack-django,dulaccc/heroku-buildpack-geodjango,ephemerallabs/heroku-buildpack-python,samuelhavron/heroku-buildpack-python,hsr-ba-fs15-dat/heroku-buildpack,PerceptumNL/heroku-buildpack-python,joshisa/python-buildpack,xica/heroku-buildpack-scipy,RobertSundling/heroku-buildpack-python-nginx,liyanchang/buildbot-master-buildpack,cloudfoundry/python-buildpack,HanSooloo/heroku-buildpack-python,integricho/heroku-buildpack-python-ffmpeg2.1-with-codecs,benjaminfox/heroku-buildpack-python-geoip,slorg1/heroku-buildpack-python,marcospy/hackathon-globo-app,soapril/heroku-buildpack-python,pmclanahan/heroku-buildpack-python-peep,andela-brotich/wger-buildpack-python,maciejgryka/heroku-buildpack-spcedge,18F/python-buildpack,Apogaea/heroku-buildpack-python,kowito/python-buildpack,nadirizr/heroku-buildpack-python-gulp,AltSchool/heroku-buildpack-python,samuelhavron/heroku-buildpack-python,swanson/heroku-buildpack-python-ortools,rbtying/heroku-buildpack-python,plangrid/heroku-buildpack-python,DylanLukes/heroku-buildpack-python,ruscoder/heroku-buildpack-python,cclauss/heroku-buildpack-python,icoxfog417/heroku-buildpack-python,miraculixx/heroku-buildpack-python,martingascon/heroku-buildpack-python