SamPrice

In Stage 2 — why reverse the loops?

Great 2D exercise. Grids appear in so many problems.

25 Oct, 18:59 · 2

In Book or videos — what worked for you?

Python Crash Course here. The projects at the end are a nice bridge to real code.

24 Oct, 12:00 · 1

In [[]] * 3 behaves weirdly

[0] * 3 is fine because numbers are immutable. The problem is only with mutable things like lists or dicts.

23 Oct, 11:28 · 6

In Stage 2 — why separate ifs instead of elif?

Exactly why. elif stops after the first match. For a checklist you want every failing rule reported, so each rule needs its own independent if.

22 Oct, 22:17

In What should be the next challenge theme?

Rover on Mars: path planning, battery, terrain grids. Lots of loops and 2D lists.

22 Oct, 16:04 · 3

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

Your book is written for Python 2. In Python 3 print became a normal function, so it needs brackets like every other function call: print("Hello"). Python 2 has been unsupported since 2020, so I'd honestly put that book…

22 Oct, 09:28 · 4

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

Accountants love this one 😄

22 Oct, 09:18 · 5

In Percentage shows 8734.0%

{mass:,} was new to me. Very handy for big numbers.

21 Oct, 22:56 · 1

In LEGB rule — what does it stand for? Solution

It's the order Python searches for a name: - Local — inside the current function - Enclosing — inside outer functions (for nested functions) - Global — the module level - Built-in — names like len, print First match win…

21 Oct, 19:08 · 7

In Stage 2 — split("-") breaks LIFE-SUPPORT-4 Solution

Use rsplit with a max split of 1. It splits from the right, only once, so everything before the last dash stays together.

21 Oct, 08:29 · 8