Use "not expr.args", not "isinstance(expr, Atom)" in simplify
Use "not expr.args", not "isinstance(expr, Atom)" in simplify

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