unfamiliar python syntax on list initialization

Question

Could someone please tell me what the statement in the 2nd line is doing? I cant find a similar example online. I think it is initializing Lst, but i cant quite picture what the list Lst will look like. Thanks

Lst = []
Lst = [ [] for i in range(65536)]

score 3 · Answer 1 · answered May 01 '20 at 01:01

3

What’s happening here is that it’s creating a list of lists. However, the inner lists will all be empty and the outer list that contains the empty list will be of size 65536.

answered May 01 '20 at 01:01

RohanP

227
1
5

score 3 · Answer 2 · answered May 01 '20 at 01:06

3

This is equivalent

Lst = []
for i in range(65536):
    Lst.append( [] )

answered May 01 '20 at 01:06

Blue Print

334
2
10

score 1 · Answer 3 · answered May 01 '20 at 01:03

1

it creates a list of 65536 '[]'

answered May 01 '20 at 01:03

Tom Planche

101
11

unfamiliar python syntax on list initialization

3 Answers3