added no variable(s) case to Derivative
added no variable(s) case to Derivative

kaushik94/sympy,Curious72/sympy,lindsayad/sympy,hargup/sympy,oliverlee/sympy,jerli/sympy,madan96/sympy,jerli/sympy,Titan-C/sympy,ChristinaZografou/sympy,yashsharan/sympy,kaushik94/sympy,Shaswat27/sympy,ChristinaZografou/sympy,chaffra/sympy,kaichogami/sympy,Shaswat27/sympy,lindsayad/sympy,Titan-C/sympy,postvakje/sympy,Arafatk/sympy,ChristinaZografou/sympy,Curious72/sympy,kaichogami/sympy,kaichogami/sympy,jaimahajan1997/sympy,mafiya69/sympy,skidzo/sympy,sampadsaha5/sympy,Arafatk/sympy,yashsharan/sympy,kaushik94/sympy,aktech/sympy,sampadsaha5/sympy,ahhda/sympy,drufat/sympy,Titan-C/sympy,postvakje/sympy,skidzo/sympy,aktech/sympy,chaffra/sympy,jaimahajan1997/sympy,aktech/sympy,hargup/sympy,madan96/sympy,ahhda/sympy,oliverlee/sympy,rahuldan/sympy,Curious72/sympy,hargup/sympy,skidzo/sympy,sampadsaha5/sympy,drufat/sympy,rahuldan/sympy,Shaswat27/sympy,ahhda/sympy,drufat/sympy,souravsingh/sympy,rahuldan/sympy,jaimahajan1997/sympy,oliverlee/sympy,jerli/sympy,mafiya69/sympy,mafiya69/sympy,postvakje/sympy,madan96/sympy,lindsayad/sympy,souravsingh/sympy,souravsingh/sympy,chaffra/sympy,Arafatk/sympy,yashsharan/sympy