Do imports at the head of the file
Do imports at the head of the file

--HG--
branch : pytest-2.7

lukas-bednar/pytest,gabrielcnr/pytest,wfxiang08/pytest,codewarrior0/pytest,wfxiang08/pytest,jb098/pytest,ionelmc/pytest,JonathonSonesen/pytest,davidszotten/pytest,tomviner/pytest,lukas-bednar/pytest,ionelmc/pytest,chiller/pytest,nicoddemus/pytest,inirudebwoy/pytest,rouge8/pytest,untitaker/pytest,userzimmermann/pytest,bukzor/pytest,MengJueM/pytest,doordash/pytest,ojake/pytest,ropez/pytest,hackebrot/pytest,icemac/pytest,gabrielcnr/pytest,Bachmann1234/pytest,ojake/pytest,Bjwebb/pytest,rmfitzpatrick/pytest,ghostsquad/pytest,JonathonSonesen/pytest,abusalimov/pytest,ericdill/pytest,takluyver/pytest,Haibo-Wang-ORG/pytest,chiller/pytest,userzimmermann/pytest,inirudebwoy/pytest,Bjwebb/pytest,nicoddemus/pytest,etataurov/pytest,hunse/pytest,The-Compiler/pytest,pelme/pytest,bukzor/pytest,omarkohl/pytest,txomon/pytest,Bachmann1234/pytest,chillbear/pytest,codewarrior0/pytest,jb098/pytest,pelme/pytest,flub/pytest,mbirtwell/pytest,pfctdayelise/pytest,MichaelAquilina/pytest,nicoddemus/repo-test,chillbear/pytest,vodik/pytest,nicoddemus/repo-test,mbirtwell/pytest,tareqalayan/pytest,MengJueM/pytest,jaraco/pytest,ericdill/pytest,oleg-alexandrov/pytest,hunse/pytest,ddboline/pytest,icemac/pytest,hpk42/pytest,mdboom/pytest,oleg-alexandrov/pytest,malinoff/pytest,vmalloc/dessert,rouge8/pytest,RonnyPfannschmidt/pytest,tomviner/pytest,takluyver/pytest,markshao/pytest,mhils/pytest,vodik/pytest,Haibo-Wang-ORG/pytest,doordash/pytest,Carreau/pytest,omarkohl/pytest,mhils/pytest,untitaker/pytest,ghostsquad/pytest,Akasurde/pytest,ropez/pytest,Carreau/pytest,hpk42/pytest,mdboom/pytest,bubenkoff/pytest,tgoodlet/pytest,eli-b/pytest,alfredodeza/pytest,bubenkoff/pytest,skylarjhdownes/pytest,The-Compiler/pytest,abusalimov/pytest,pytest-dev/pytest