Parse a list into a list of lists in python-CodePudding

I am trying to figure out how to parse a list into a list of lists.

            tileElements = browser.find_element(By.CLASS_NAME, 'tile-container')
            tileHTML = (str(tileElements.get_attribute('innerHTML')))
            tileNUMS = re.findall('\d ',tileHTML)
            NumTiles = int(len(tileNUMS)/4)
            #parse out list, each 4 list items are one tile
            print(str(tileNUMS))
            print(str(NumTiles))
            
            TileList = [[i j for i in range(len(tileNUMS))]for j in range (NumTiles)]
            print(str(TileList))

The first part of this code works find and gives me a list of Tile Numbers:

['2', '3', '1', '2', '2', '4', '4', '2']

However, what I need is a list of lists made out of this and that is where I am getting stuck. The list of lists should be 4 elements long and look like this:

[['2', '3', '1', '2'] , ['2', '4', '4', '2']]

It should be able to do this for as many tiles as there are in the game (up to 19 I believe). It would be really nice if when the middle numbers are repeated that the two outside numbers are replaced with the latest value from the source list.

CodePudding user response：

You can use a list comprehension to get slices from the list like so.

elements = ['2', '3', '1', '2', '2', '4', '4', '2']
size = 4
result = [elements[i:i size] for i in range(0, len(elements), size)]

(By the way, there's no need to cast things into str to print them, and tileHTML is probably already a string, too.)