高级数组连接

Question

假设我有四个多维数组-

a = [["a","a","a"],
    ["a","a","a"],
    ["a","a","a"]]
b = [["b","b","b"],
    ["b","b","b"],
    ["b","b","b"]]
c = [["c","c","c"],
    ["c","c","c"],
    ["c","c","c"]]
d = [["d","d","d"],
    ["d","d","d"],
    ["d","d","d"]]

我想把它们组合成一个数组

total = [["a","a","a","b","b","b"],
        ["a","a","a","b","b","b"],
        ["a","a","a","b","b","b"], 
        ["c","c","c","d","d","d"],
        ["c","c","c","d","d","d"],
        ["c","c","c","d","d","d"]]

我该怎么做？你知道吗

我这样做是为了生成spelunky风格的地图

Answer 1

您可以使用一条单行指令来完成，该指令将列表理解、zip指令和列表连接与+混合使用

[aa+bb for aa,bb in zip(a,b)] + [cc+dd for cc,dd in zip(c,d)]

整个代码

a = [["a","a","a"],
    ["a","a","a"],
    ["a","a","a"]]
b = [["b","b","b"],
    ["b","b","b"],
    ["b","b","b"]]
c = [["c","c","c"],
    ["c","c","c"],
    ["c","c","c"]]
d = [["d","d","d"],
    ["d","d","d"],
    ["d","d","d"]]
result = [aa+bb for aa,bb in zip(a,b)] + [cc+dd for cc,dd in zip(c,d)]

Answer 2

可能是这样的：

top = list(x+y for x,y in zip(a,b))
bottom = list(x+y for x,y in zip(c,d))
total = top + bottom

for r in total: print(r)

输出：

['a', 'a', 'a', 'b', 'b', 'b']
['a', 'a', 'a', 'b', 'b', 'b']
['a', 'a', 'a', 'b', 'b', 'b']
['c', 'c', 'c', 'd', 'd', 'd']
['c', 'c', 'c', 'd', 'd', 'd']
['c', 'c', 'c', 'd', 'd', 'd']

Answer 3

假设地图的布局比2x2块更复杂：

from itertools import chain
from pprint import pprint


a = [["a","a","a"],
     ["a","a","a"],
     ["a","a","a"]]
b = [["b","b","b"],
     ["b","b","b"],
     ["b","b","b"]]
c = [["c","c","c"],
     ["c","c","c"],
     ["c","c","c"]]
d = [["d","d","d"],
     ["d","d","d"],
     ["d","d","d"]]
e = [["e","e","e"],
     ["e","e","e"],
     ["e","e","e"]]
f = [["f","f","f"],
     ["f","f","f"],
     ["f","f","f"]]

layouts = [
    ((a, b), (c, d)),
    ((a, b, c), (d, e, f)),
    ((a, b), (c, d), (e, f)),
]

for layout in layouts:
    total = [list(chain(*row)) for lrow in layout for row in zip(*lrow)]
    pprint(total)

输出：

[['a', 'a', 'a', 'b', 'b', 'b'],
 ['a', 'a', 'a', 'b', 'b', 'b'],
 ['a', 'a', 'a', 'b', 'b', 'b'],
 ['c', 'c', 'c', 'd', 'd', 'd'],
 ['c', 'c', 'c', 'd', 'd', 'd'],
 ['c', 'c', 'c', 'd', 'd', 'd']]

[['a', 'a', 'a', 'b', 'b', 'b', 'c', 'c', 'c'],
 ['a', 'a', 'a', 'b', 'b', 'b', 'c', 'c', 'c'],
 ['a', 'a', 'a', 'b', 'b', 'b', 'c', 'c', 'c'],
 ['d', 'd', 'd', 'e', 'e', 'e', 'f', 'f', 'f'],
 ['d', 'd', 'd', 'e', 'e', 'e', 'f', 'f', 'f'],
 ['d', 'd', 'd', 'e', 'e', 'e', 'f', 'f', 'f']]

[['a', 'a', 'a', 'b', 'b', 'b'],
 ['a', 'a', 'a', 'b', 'b', 'b'],
 ['a', 'a', 'a', 'b', 'b', 'b'],
 ['c', 'c', 'c', 'd', 'd', 'd'],
 ['c', 'c', 'c', 'd', 'd', 'd'],
 ['c', 'c', 'c', 'd', 'd', 'd'],
 ['e', 'e', 'e', 'f', 'f', 'f'],
 ['e', 'e', 'e', 'f', 'f', 'f'],
 ['e', 'e', 'e', 'f', 'f', 'f']]