add docstring for measure in fu function
add docstring for measure in fu function

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