abhi9u@lemmy.world to Technology@lemmy.worldEnglish · 6 个月前Python Performance: Why 'if not list' is 2x Faster Than Using len()blog.codingconfessions.comexternal-linkmessage-square125fedilinkarrow-up1198arrow-down123
arrow-up1175arrow-down1external-linkPython Performance: Why 'if not list' is 2x Faster Than Using len()blog.codingconfessions.comabhi9u@lemmy.world to Technology@lemmy.worldEnglish · 6 个月前message-square125fedilink
minus-squareantlion@lemmy.dbzer0.comlinkfedilinkEnglisharrow-up1·6 个月前But the first example does the same thing for an empty list. I guess the lesson is that if you’re measuring the speed of arbitrary stylistic syntax choices, maybe Python isn’t the best language for you.
minus-squareFooBarrington@lemmy.worldlinkfedilinkEnglisharrow-up1arrow-down1·edit-26 个月前Yes, the first example does the same thing, but there’s still less to mentally parse. Ideally you should just use if len(mylist) == 0:.
But the first example does the same thing for an empty list. I guess the lesson is that if you’re measuring the speed of arbitrary stylistic syntax choices, maybe Python isn’t the best language for you.
Yes, the first example does the same thing, but there’s still less to mentally parse. Ideally you should just use
if len(mylist) == 0:.