python - 使用双递归从列表中删除 John Wick

Question

为了让我接管 Matrix，我首先需要从中移除 John Wick。他非常善于隐藏(很明显)，所以他把自己分成了一个列表和列表中的列表。例如:

environment = ["a", [**"j"**, "e", **"o"**], [**"h"**, **"n"**, "s", 
    **"w"**, "o"], [**"i", "c", "k"**]]

target = "johnwick"

只允许双重递归，以便从 Matrix 的列表中删除 John Wick。他不属于这里。这是我到目前为止想出的:

def no_wick(environment):
    target = "johnwick"
    clean_matrix = []
    if not environment:
        return clean_matrix
    elif isinstance(environment[0], list): 

        ???????

    elif environment[0] not in target:
        return clean_matrix.append(environment[0]) + no_wick(environment[1:])
    else: 
        return no_wick(environment[1:])

你能帮我把约翰威克从黑客帝国中移除，而我照顾托马斯 A. 安德森吗？

Answer 1

如果我理解你是正确的，这个例子可以帮助你:

In [1]: target = 'johnwick'

In [2]: environment = ['a', ['j', 'e', 'o'], ['h', 'n', 's', 'w', 'o'], ['i', 'c', 'k']]

In [3]: def no_wick(l, target):
   ...:     clear = []
   ...:     for x in l:
   ...:         if isinstance(x, list):
   ...:             x, target = no_wick(x, target)
   ...:             clear.append(x)
   ...:         else:
   ...:             if target.startswith(x):
   ...:                 target = target[1:]
   ...:             else:
   ...:                 clear.append(x)
   ...:     return clear, target


In [4]: no_wick(environment, target)
Out[4]: (['a', ['e'], ['s', 'o'], []], '')