spotify: Fix flake8 warnings in lookup method
spotify: Fix flake8 warnings in lookup method

priestd09/mopidy,kingosticks/mopidy,hkariti/mopidy,jmarsik/mopidy,rawdlite/mopidy,diandiankan/mopidy,vrs01/mopidy,ZenithDK/mopidy,ali/mopidy,swak/mopidy,liamw9534/mopidy,ali/mopidy,diandiankan/mopidy,jmarsik/mopidy,dbrgn/mopidy,tkem/mopidy,bacontext/mopidy,woutervanwijk/mopidy,ZenithDK/mopidy,rawdlite/mopidy,hkariti/mopidy,mopidy/mopidy,bacontext/mopidy,pacificIT/mopidy,pacificIT/mopidy,liamw9534/mopidy,rawdlite/mopidy,woutervanwijk/mopidy,quartz55/mopidy,adamcik/mopidy,mokieyue/mopidy,bencevans/mopidy,dbrgn/mopidy,swak/mopidy,bacontext/mopidy,abarisain/mopidy,bencevans/mopidy,swak/mopidy,ZenithDK/mopidy,diandiankan/mopidy,abarisain/mopidy,vrs01/mopidy,quartz55/mopidy,mokieyue/mopidy,ali/mopidy,vrs01/mopidy,dbrgn/mopidy,dbrgn/mopidy,SuperStarPL/mopidy,diandiankan/mopidy,mokieyue/mopidy,jcass77/mopidy,adamcik/mopidy,glogiotatidis/mopidy,priestd09/mopidy,tkem/mopidy,ali/mopidy,bencevans/mopidy,SuperStarPL/mopidy,kingosticks/mopidy,tkem/mopidy,adamcik/mopidy,mokieyue/mopidy,glogiotatidis/mopidy,rawdlite/mopidy,quartz55/mopidy,quartz55/mopidy,bacontext/mopidy,ZenithDK/mopidy,hkariti/mopidy,jmarsik/mopidy,pacificIT/mopidy,hkariti/mopidy,priestd09/mopidy,pacificIT/mopidy,vrs01/mopidy,jodal/mopidy,SuperStarPL/mopidy,jcass77/mopidy,glogiotatidis/mopidy,glogiotatidis/mopidy,jmarsik/mopidy,jcass77/mopidy,mopidy/mopidy,jodal/mopidy,SuperStarPL/mopidy,swak/mopidy,jodal/mopidy,kingosticks/mopidy,mopidy/mopidy,tkem/mopidy,bencevans/mopidy