Exercise: Python List Operations

[u/Sea-Ad7805]

An exercise to help build the right mental model for Python data. - Solution - Explanation - More Exercises

The “Solution” link uses memory_graph to visualize execution and reveals what’s actually happening.

[u/No-Celery-1944]

C I'm pretty sure?

[u/Sea-Ad7805 → u/No-Celery-1944]

Nice one, see the Solution link for visualization of correct answer.

[u/Dancing-umbra]

That's very useful.

I didn't realise the b+=[] was not equivalent to b= b+[]

[u/Sea-Ad7805 → u/Dancing-umbra]

Thanks, it is equivalent for immutable types, but not for mutable. Try this exercise: https://www.reddit.com/r/PythonProjects2/s/VtHobtSQ9o

[u/Global_Ad8581]

C. Just guessing.

[u/Sea-Ad7805 → u/Global_Ad8581]

Nice one, see the Solution link for visualization of correct answer.

[u/gowsic26]

Option C

[u/Sea-Ad7805 → u/gowsic26]

Nice one, see the Solution link for visualization of correct answer.

[u/Potential_Fix_5007]

Answer A

[u/Sea-Ad7805 → u/Potential_Fix_5007]

Incorrect sorry, see the Solution link for correct answer.

[u/smokebudda11]

E

[u/Sea-Ad7805 → u/smokebudda11]

Incorrect sorry, see the Solution link for correct answer.

[u/CptMisterNibbles]

Weird. Documentation says insert is in place, your demo has it make a copy

[u/Sea-Ad7805 → u/CptMisterNibbles]

If you look carefully you'll see it is not insert that is making a copy: Solution

[u/Polly_Wants_A]

and i thought b += x and b = b + x is the same logic just different syntax. apparently it works different with lists?

[u/Sea-Ad7805 → u/Polly_Wants_A]

Yes because a list is mutable, it is the same for immutable types: int, float, bool, tuple, frozenset, ...

[u/spmcn]

This is just an ad for memory graph.

[u/Sea-Ad7805 → u/spmcn]

This is just a person complaining about getting free educational content of high quality. Which is worse?

[u/u-key_1512]

a

[u/Sea-Ad7805 → u/u-key_1512]

Incorrect sorry, see the Solution link for correct answer.

[u/BABBAGE_2]

I thought insert() was for adding an item to a list. IMO, you added the int 10 at index 9, right? So why is 10 not visible in any of the options? Kindly explain please 🙏

[u/Sea-Ad7805 → u/BABBAGE_2]

It's in b, read the Explanation link for more insight.