Question

I am learning python and panda3d currently.
I have a nested list which i need to convert into a list of coordinates.

my input is

    [['g,g', 'g,g'], ['d,d', 'd,d,d', 'd,d], ['s,s', 's,s']]

The Output that I need is another list:

    [(0,0,0,'s'),(0,1,0,'s'),(1,0,0,'s'),(1,1,0,'s'),(0,0,1,'d'),(0,1,1,'d'),(1,0,1,'d'),(1,1,1,'d'),(1,2,1,'d'),(2,0,1,'d'),(2,1,1,'d'),(0,0,2,'g'),(0,1,2,'g'),(1,0,2,'g'),(1,1,2,'g')]

this simple list conversion is scrambling my brain. o.0

EDIT: more info:
in the input list, the last nested list represents the base layer.

The idea was to convert string i have written in a file into coordinate points. This is the content of the file:

    [LVL02]
    g,g
    g,g
    [/LVL02]
    [LVL01]
    d,d
    d,d,d
    d,d
    [/LVL01]
    [LVL00]
    s,s
    s,s
    [/LVL00]

this should give me a very basic map maker. each level is a flat 2d surface.

    [LVL02]
    g,g             (0,0,2,'g'),(0,1,2,'g')
    g,g             (1,0,2,'g'),(1,1,2,'g')
    [/LVL02]
    [LVL01]
    d,d             (0,0,1,'d'),(0,1,1,'d')
    d,d,d           (1,0,1,'d'),(1,1,1,'d'),(1,2,1,'d')
    d,d             (2,0,1,'d'),(2,1,1,'d')
    [/LVL01]
    [LVL00]
    s,s             (0,0,0,'s'), 0,1,0,'s')
    s,s             (1,0,0,'s'),(1,1,0,'s')
    [/LVL00]

ie. (xaxis,yaxis,zaxis, type)

Answer 1

It might be this:

l = [['g,g', 'g,g'], ['d,d', 'd,d,d', 'd,d'], ['s,s', 's,s']]
output = [ (x, y, z, v) for z, l1 in enumerate(l[::-1]) for y, l2 in enumerate(l1) for x, v in enumerate(l2.split(',')) ]

… but as it has been written, it is not clear what the rule is exactly. In nested loops:

output = []
for z,l1 in enumerate(l[::-1]):
    for y, l2 in enumerate(l1):
        for x, v in enumerate(l2.split(',')):
            output.append((x, y, z, v))