Python- 组合两个列表以制作列表列表

Question

我想将两个列表组合成一个列表列表。反之亦然。我找不到任何有用的东西，而且我对 Python 很陌生

例子：

S1 = [1,2,3]
S2 = [4,5,6,7]

Expected output 
S = [[1,2,3],[4,5,6,7]]

以及如何将 S 拆分回原来的 S1 和 S2 ？例子：

S = [[1,2,3],[4,5,6,7]]
Expected output
S1 = [1,2,3]
S2 = [4,5,6,7]

Answer 1

这是最简单的解决方案。

>>> S1 = [1,2,3]
>>> S2 = [4,5,6,7]
>>> S = [S1, S2]
>>> S
[[1, 2, 3], [4, 5, 6, 7]]

要再次取回您的列表：

>>> S1 = S[0]
>>> S2 = S[1]
>>> S1
[1, 2, 3]
>>> S2
[4, 5, 6, 7]