I think it does make sense, it’s a “did this loop exit naturally? If so, do x”. This makes a lot of sense if you, for example, have a loop that checks a condition and breaks if that condition is met, e.g. finding the next item in a list. This allows for the else statement to set some default value to indicate that no match was found.

Imo, the feature can be very useful under certain circumstances, but the syntax is very confusing, and thus it’s almost never a good idea to actually use it in code, since it decreases readability a lot for people not intimately familiar with the language.

Edit: Now, this is just guessing, but what I assume happens under the hood is that the else statement is executed when the StopIteration exception is recieved, which happens when next() is called on an exhausted iterator (either empty or fully consumed)

Your point about it not running when there is nothing to iterate over is incorrect. The else-statement runs when the iterator is exhausted; if the iterator empty, it is exhausted immediately and the else-statement is executed.

Which makes it easier to keep up the momentum

The answer says “any character” not “any characters”, so it is still correct.

As long as it’s maintained. Wrong documentation can often be worse than no documentation.

Comment should describe “why?”, not “how?”, or “what?”, and only when the “why?” is not intuitive.

The problem with comments arise when you update the code but not the comments. This leads to incorrect comments, which might do more harm than no comments at all.

E.g. Good comment: “This workaround is due to a bug in xyz”

Bad comment: “Set variable x to value y”

Note: this only concerns code comments, docstrings are still a good idea, as long as they are maintained

Not the Doppler effect, as that only applies to moving objects, but instead the inverse square law, where the energy of the sound wave decreases by the square of the distance from the origin, since it spreads in a sphere with the energy being spread across the surface of the sphere, resulting in a very quick dropoff in the loudness.

source

Copper acetate crystals are also really cool! source

What happens on the next iteration when i = 2,147,483,647 for each of our loops?

Not quite the same, there’s a subtle but significant difference

for(int i = 1; i > 0; i++)