Pythonic way of creating list of lists from list

Question

I would like to create a list of lists from a list.

The list looks like this:

level = ['   WWWWWWWWWWWWWWWWW', 'C  W C             W', 'C  W C             W', 'C  W C             W', 'C  W C             W', 'C  W C             W', 'C  W C             W', 'C  W C             W', 'C  W C             W', 'C  W C             W', 'C  W C             W', 'C  W C             W', 'C                  E']

I need to create this:

[[' ', ' ', ' ', 'W', 'W', 'W', 'W', 'W', 'W', 'W', 'W', 'W', 'W', 'W', 'W', 'W', 'W', 'W', 'W', 'W'], ['C', ' ', ' ', 'W', ' ', 'C', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', 'W'], ['C', ' ', ' ', 'W', ' ', 'C', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', 'W'], ['C', ' ', ' ', 'W', ' ', 'C', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', 'W'], ['C', ' ', ' ', 'W', ' ', 'C', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', 'W'], ['C', ' ', ' ', 'W', ' ', 'C', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', 'W'], ['C', ' ', ' ', 'W', ' ', 'C', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', 'W'], ['C', ' ', ' ', 'W', ' ', 'C', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', 'W'], ['C', ' ', ' ', 'W', ' ', 'C', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', 'W'], ['C', ' ', ' ', 'W', ' ', 'C', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', 'W'], ['C', ' ', ' ', 'W', ' ', 'C', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', 'W'], ['C', ' ', ' ', 'W', ' ', 'C', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', 'W'], ['C', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', 'E']]

I have done it this way:

listofLists = []
for row in level:
  liss = []
  for col in row:
    liss.append(col)
  listofLists.append(liss)

What is a more pythonic way or shorter way of doing this?

ch3ka · Accepted Answer · 2014-10-29 15:42:53Z

4

>>> listofLists = map(list,level)

(in python3, if you really need a list, do list(map(list, level)))

answered Oct 29, 2014 at 15:42

ch3ka

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1 Comment

Raydel Miranda Over a year ago

What a timing!!! I have to even pass an "I am a human" test to be able to answer.

Raydel Miranda · Accepted Answer · 2014-10-29 15:43:29Z

2

When you call list() on a string this will return the list of all its characters (including spaces).

level = ['   WWWWWWWWWWWWWWWWW', 'C  W C             W', 'C  W C             W', 'C  W C             W', 'C  W C             W', 'C  W C             W', 'C  W C             W', 'C  W C             W', 'C  W C             W', 'C  W C             W', 'C  W C             W', 'C  W C             W', 'C                  E']
trasnsformed = [list(x) for x in level]

answered Oct 29, 2014 at 15:43

Raydel Miranda

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