Fix return value of _doctest
Fix return value of _doctest

cccfran/sympy,Designist/sympy,garvitr/sympy,sampadsaha5/sympy,abhiii5459/sympy,kevalds51/sympy,MridulS/sympy,iamutkarshtiwari/sympy,jamesblunt/sympy,yashsharan/sympy,amitjamadagni/sympy,shikil/sympy,wyom/sympy,souravsingh/sympy,maniteja123/sympy,yashsharan/sympy,meghana1995/sympy,shipci/sympy,kaushik94/sympy,AkademieOlympia/sympy,ChristinaZografou/sympy,bukzor/sympy,ga7g08/sympy,abloomston/sympy,atreyv/sympy,wanglongqi/sympy,souravsingh/sympy,kumarkrishna/sympy,skidzo/sympy,vipulroxx/sympy,yukoba/sympy,jerli/sympy,meghana1995/sympy,skidzo/sympy,mcdaniel67/sympy,debugger22/sympy,kevalds51/sympy,kmacinnis/sympy,ga7g08/sympy,maniteja123/sympy,yukoba/sympy,ahhda/sympy,jerli/sympy,Sumith1896/sympy,bukzor/sympy,Gadal/sympy,Curious72/sympy,pbrady/sympy,lindsayad/sympy,rahuldan/sympy,jamesblunt/sympy,farhaanbukhsh/sympy,meghana1995/sympy,toolforger/sympy,sahilshekhawat/sympy,rahuldan/sympy,shipci/sympy,toolforger/sympy,hargup/sympy,atreyv/sympy,sahilshekhawat/sympy,shipci/sympy,ahhda/sympy,aktech/sympy,Davidjohnwilson/sympy,Shaswat27/sympy,liangjiaxing/sympy,Arafatk/sympy,shikil/sympy,chaffra/sympy,VaibhavAgarwalVA/sympy,cccfran/sympy,srjoglekar246/sympy,dqnykamp/sympy,Vishluck/sympy,drufat/sympy,hargup/sympy,farhaanbukhsh/sympy,lidavidm/sympy,cccfran/sympy,jaimahajan1997/sympy,Vishluck/sympy,jbbskinny/sympy,wanglongqi/sympy,asm666/sympy,emon10005/sympy,jbbskinny/sympy,Mitchkoens/sympy,oliverlee/sympy,sampadsaha5/sympy,emon10005/sympy,Designist/sympy,kmacinnis/sympy,liangjiaxing/sympy,kaushik94/sympy,grevutiu-gabriel/sympy,jerli/sympy,pandeyadarsh/sympy,wyom/sympy,abhiii5459/sympy,Titan-C/sympy,hrashk/sympy,dqnykamp/sympy,dqnykamp/sympy,pbrady/sympy,emon10005/sympy,mafiya69/sympy,kevalds51/sympy,sunny94/temp,saurabhjn76/sympy,cswiercz/sympy,asm666/sympy,MridulS/sympy,vipulroxx/sympy,postvakje/sympy,lindsayad/sympy,ChristinaZografou/sympy,beni55/sympy,souravsingh/sympy,lindsayad/sympy,kaichogami/sympy,mcdaniel67/sympy,ChristinaZografou/sympy,kaichogami/sympy,kumarkrishna/sympy,ga7g08/sympy,kumarkrishna/sympy,AunShiLord/sympy,sahmed95/sympy,shikil/sympy,kaichogami/sympy,hrashk/sympy,atreyv/sympy,yashsharan/sympy,chaffra/sympy,aktech/sympy,AunShiLord/sympy,Mitchkoens/sympy,oliverlee/sympy,iamutkarshtiwari/sympy,diofant/diofant,abhiii5459/sympy,Gadal/sympy,pbrady/sympy,asm666/sympy,Sumith1896/sympy,Arafatk/sympy,lidavidm/sympy,Shaswat27/sympy,AunShiLord/sympy,vipulroxx/sympy,Arafatk/sympy,bukzor/sympy,mafiya69/sympy,abloomston/sympy,Gadal/sympy,wanglongqi/sympy,hrashk/sympy,yukoba/sympy,sunny94/temp,jaimahajan1997/sympy,pandeyadarsh/sympy,Curious72/sympy,oliverlee/sympy,Vishluck/sympy,sampadsaha5/sympy,MechCoder/sympy,MechCoder/sympy,madan96/sympy,madan96/sympy,rahuldan/sympy,garvitr/sympy,amitjamadagni/sympy,moble/sympy,lidavidm/sympy,drufat/sympy,beni55/sympy,drufat/sympy,jbbskinny/sympy,VaibhavAgarwalVA/sympy,kaushik94/sympy,farhaanbukhsh/sympy,abloomston/sympy,madan96/sympy,liangjiaxing/sympy,beni55/sympy,debugger22/sympy,Shaswat27/sympy,cswiercz/sympy,wyom/sympy,Titan-C/sympy,Davidjohnwilson/sympy,grevutiu-gabriel/sympy,postvakje/sympy,skirpichev/omg,MridulS/sympy,jamesblunt/sympy,moble/sympy,mafiya69/sympy,garvitr/sympy,VaibhavAgarwalVA/sympy,Sumith1896/sympy,toolforger/sympy,moble/sympy,saurabhjn76/sympy,Curious72/sympy,postvakje/sympy,flacjacket/sympy,cswiercz/sympy,kmacinnis/sympy,jaimahajan1997/sympy,ahhda/sympy,Mitchkoens/sympy,AkademieOlympia/sympy,saurabhjn76/sympy,debugger22/sympy,skidzo/sympy,maniteja123/sympy,grevutiu-gabriel/sympy,sahmed95/sympy,atsao72/sympy,pandeyadarsh/sympy,atsao72/sympy,Titan-C/sympy,chaffra/sympy,atsao72/sympy,AkademieOlympia/sympy,sahmed95/sympy,hargup/sympy,Designist/sympy,Davidjohnwilson/sympy,MechCoder/sympy,sahilshekhawat/sympy,iamutkarshtiwari/sympy,mcdaniel67/sympy,sunny94/temp,aktech/sympy