Use evalf_sum to evaluate Sum after rewritting the Product
Use evalf_sum to evaluate Sum after rewritting the Product

In case evalf_sum can't do the Sum - it should raise NotImplementedError.
Then, evalf can return the original expr for the Product.

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