4 ms·

Point 3 of the iteration part is not good advice. With [1:] you're making a copy of the list just to iterate over it...

• omaranto 12y ago
  You're right. I still wouldn't recommend looping over indices, but rather using itertools.islice(xs, 1, None) instead of xs[1:].
• zo1 12y ago
  You're right... But at least it's a shallow copy.