Hey. Question

Question

So I have this code. And it's simple and i figured it out. But when i added "+1" my answer is no loner 9, which is half of 18. Ita now 10. Why isn't it still 18? Can someone explain?

Is it simply because by adding 1 I increased my index by 1, moving the 9 from the 9th spot to the 10th? Meaning even tho it's saying 10 the answer is still 9, just hidden in the 10th spot of my updated index?

https://code.sololearn.com/cQuQOH6CXk13/?ref=app

Answer 1

Hey Kidale
the index does not matter. Because this is not indexing.

If your code is like this,

sam = [i+1 for i in range(20) if i * 2 == 18]
print(sam)

then your code has successfully executed your command by finding the number whose double is 18 (i.e. the number 9), and then it added one to it. So, simply enough 9+1=10

And if your code is like this,

sam = [i for i+1 in range(20) if i * 2 == 18]
print(sam)

It will give you an error

I hope that answers your question.

Answer 2

Kidale I didn't mean to make you look bad. Sorry 🙏
I think the proper term is conditional iteration (followed by addition).

Answer 3

It has nothing to do with indexes. Take a look at this example.

sam = [i*3 for i in range(20) if i * 2 == 10]
print(sam) # [27]

If the condition is True then the number gets multiplied by 3 and the result is added to the list. The same thing happens with "i+1" (9+1 == 10).

Answer 4

Usama Bin Mamun you wanna be my coach. 😁

Answer 5

Hey Diego. Well you can't tell here. But originally it said.

" I for I in range(20) "
I changed it to
" i+1 for I in range(20)"

Answer 6

Usama Bin Mamun why you gotta make me look bad 🤣, anyway. So what is the proper term if not indexing for this case?