Refactor according to pylint
Refactor according to pylint

pfeyz/psiTurk,NYUCCL/psiTurk,suchow/psiTurk,pfeyz/psiTurk,michaelpacer/psiTurk,andyh616/psiTurk,NYUCCL/psiTurk,michaelpacer/psiTurk,suchow/psiTurk,kachergis/psiTurk,mshvartsman/psiTurk,kachergis/psiTurk,pfeyz/psiTurk,suchow/psiTurk,rbtrace/psiTurk,mshvartsman/psiTurk,andyh616/psiTurk,mshvartsman/psiTurk,berkeley-cocosci/psiTurk,NYUCCL/psiTurk,andyh616/psiTurk,berkeley-cocosci/psiTurk,kachergis/psiTurk,rbtrace/psiTurk,rbtrace/psiTurk,michaelpacer/psiTurk,berkeley-cocosci/psiTurk