LucasVD

In RuntimeError: dictionary changed size during iteration

Same applies to lists, except lists don't warn you — they just skip elements silently. Even worse!

25 Oct, 19:27

In zip() silently dropping data scared me

strict=True! Using that from now on.

24 Oct, 16:50 · 1

In How do you remember all the syntax?

Completely normal. Nobody remembers everything — experienced devs look things up all day. You'll remember what you use often, and look up the rest. The skill is knowing what to look up.

24 Oct, 15:24 · 3

In Book or videos — what worked for you?

+1 for Automate the Boring Stuff. It's also free to read online.

24 Oct, 12:15 · 3

In How strict should valid_email be?

That one-liner is gold. Using it everywhere now.

24 Oct, 09:09 · 6

In Why does print need brackets? Old tutorial doesn't use them

Same thing happened to me with a YouTube video from 2014. Check the date before following anything 🙂

23 Oct, 07:47 · 1

In continue vs wrapping everything in an if

Strip before checking for "#" — a comment line with leading spaces otherwise slips through.

22 Oct, 20:33

In Stage 2 says my output doesn't match but it looks identical

Welcome to programming, where one space can ruin your afternoon 😄

22 Oct, 14:50 · 6

In if __name__ == "__main__": — what is this for?

Without it, importing a module runs all its top-level code, which can be surprising (prints, file writes...).

22 Oct, 11:57 · 4

In round(2.5) is 2?? Is this a bug?

Not a bug — Python uses "banker's rounding" (round half to even): exact .5 cases go to the nearest even number. So round(2.5) is 2, round(3.5) is 4. It avoids a systematic upward bias when you round lots of values.

21 Oct, 17:33 · 2