python - 优雅地扩展几个列表

Question

给定几个列表:

a = ["a1", "a2", "a3"]
b = ["b1", "b2", "b3"]
...
n = ["n1", "n2", "n3"]

以及新值列表:

new_vals = ["a4", "b4", "n4"]

我想得到:

["a1", "a2", "a3", "a4"]
["b1", "b2", "b3", "b4"]
...
["n1", "n2", "n3", "n4"]

当然，我可以用循环和临时变量来做到这一点。似乎 zip、map 和 list.extend 的组合应该做得更优雅，但我无法理解。

Answer 1

像这样:

a = ["a1", "a2", "a3"]
b = ["b1", "b2", "b3"]

# Put the list a, b ... in a big_list. 
big_list = [a, b]

new_vals = ["a4", "b4", "n4"]

for i, new_val in enumerate(new_vals):
    big_list[i].append(new_val)