Revert "removed trailing spaces"
Revert "removed trailing spaces"

This reverts commit 8174b60306468459641f076ffc4ff0dad307a123.

sampadsaha5/sympy,kaushik94/sympy,aktech/sympy,madan96/sympy,jaimahajan1997/sympy,chaffra/sympy,skidzo/sympy,yashsharan/sympy,drufat/sympy,kaushik94/sympy,souravsingh/sympy,aktech/sympy,aktech/sympy,yashsharan/sympy,souravsingh/sympy,hargup/sympy,hargup/sympy,souravsingh/sympy,madan96/sympy,sampadsaha5/sympy,sampadsaha5/sympy,postvakje/sympy,drufat/sympy,rahuldan/sympy,yashsharan/sympy,jaimahajan1997/sympy,postvakje/sympy,ChristinaZografou/sympy,skidzo/sympy,chaffra/sympy,ChristinaZografou/sympy,kaushik94/sympy,madan96/sympy,ChristinaZografou/sympy,rahuldan/sympy,drufat/sympy,jaimahajan1997/sympy,chaffra/sympy,rahuldan/sympy,skidzo/sympy,hargup/sympy,postvakje/sympy