Use io.open in test_args
Use io.open in test_args

This lets it work even in non-Unicode environments

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