Python: Create an empty dict from A to Z without J and Y

Question

I want to create an empty dict from A to Z without J and Y.

my_dict = {x: [0] * 15 for x in string.ascii_uppercase}

With this, I create an empty dict with all alphabets but I want a list without J and Y. How I can make this.

Thanks a lot for any help :)

`my_dict = {x: [0] * 15 for x in string.ascii_uppercase if not in 'YJ'}` should work. — N.Moudgil, Feb 12 '20 at 09:30
There are not enough answers using a dictionary comphrension — Chris_Rands, Feb 12 '20 at 09:31

score 4 · Answer 1 · answered Feb 12 '20 at 09:29

4

You can have conditions in dict comprehension

my_dict = {x: [0] * 15 for x in string.ascii_uppercase if x not in "YJ"}

answered Feb 12 '20 at 09:29

Eternal

score 2 · Answer 2 · edited Feb 12 '20 at 09:38

2

my_dict = {x: [0] * 15 for x in string.ascii_uppercase if x not in ['J','Y']}

edited Feb 12 '20 at 09:38

Dishin H Goyani

answered Feb 12 '20 at 09:30

gsb22

score 1 · Answer 3 · answered Feb 12 '20 at 09:29

1

Just use a hard-coded string, you could use an if statement but there isn't any need to

my_dict = {x: [0] * 15 for x in "ABCDEFGHIKLMNOPQRSTUVWXZ"}

answered Feb 12 '20 at 09:29

Sayse

1

really generalizable too ;) – Chris_Rands Feb 12 '20 at 09:32
@Chris_Rands - Its actually inspired by a google interview question, whats the most efficient way to write fizzbuzz, where the answer is a hard-coded list ;) – Sayse Feb 12 '20 at 09:32

score 1 · Answer 4 · answered Feb 12 '20 at 09:30

1

{x: [0] * 15 for x in string.ascii_uppercase if x not in 'JY'}

answered Feb 12 '20 at 09:30

RikkiH

score 1 · Answer 5 · answered Feb 12 '20 at 09:30

1

my_dict = {x: [0] * 15 for x in string.ascii_uppercase if x not in ["J", "Y"]}

This should do the job

answered Feb 12 '20 at 09:30

Arkenys

Why create a list ["J", "Y"]? @Arkenys – Eternal Feb 12 '20 at 09:31
Because the solution with a list is working maybe ? What is the purpose of providing the exact same solution as others that already answered with ```in "JY"``` ? – Arkenys Feb 12 '20 at 09:33
That solution requires a list creation which is not as optimized as "JY". Also not readable (comparing to simple string). – Eternal Feb 12 '20 at 09:34
If you think a list is not readable, then I won't imagine how more complicated structures appear to you tbh. It's maybe less optimized because required a list creation, but it also show that you can use a list to do the same job. Which, in other cases than just working with simple chars could be useful. – Arkenys Feb 12 '20 at 09:37

5 Answers5