Comment on Python Performance: Why 'if not list' is 2x Faster Than Using len()

knighthawk0811@lemmy.ml ⁨1⁩ ⁨week⁩ ago

• sugar_in_your_tea@sh.itjust.works ⁨1⁩ ⁨week⁩ ago

  Oh, there are plenty of other terrible ways:

  for _ in mylist:
      break
  else:
      # whatever you'd do if mylist was empty
  

  if not any(True for _ in mylist):
  

  try:
      def do_raise(): raise ValueError
  
      _ = [do_raise() for _ in mylist]
  except ValueError:
      pass
  else:
      # whatever you'd do i mylist was empty
  

  I could probably come up with a few others as well.

  source