improve docstring, remove unused custom Exception
improve docstring, remove unused custom Exception

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