On: I got asked LeetCode questions for a dev-ops systems engineering job today

[kamaal]

Nothing. Probably the original developer was trying to do the same thing. There is always a context to what some one is doing.

[pault → kamaal]

I think the try/catch block is confusing commenters; it's irrelevant to the control flow in this case. You could consider it equivalent to:

  for i=0; i<3; i++:
    doSomething();
    if i<3:
      continue;
    else:
      break;