List 要字符串的列表的列表

我有一个列表，例如：

sample = [['a'],['b']]

我希望将此列表转换为字符串列表，如

sample = ['a','b']

我以前使用过列表，但这似乎困扰着我！！

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提前感谢

您尚未涵盖所有案例，但：

[''.join(x) for x in sample]

试试这个：

In [5]: sample = [['a'],['b']]

In [6]: [item for sublist in sample for item in sublist]
Out[6]: ['a', 'b']

或

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简单的for循环就足够了-

>>> s = [['a'],['b']]
>>> t = []
>>> for a in s:
        for b in a:
            t.append(b)


>>> t
['a', 'b']

>>> s = [['a'],['b']]
>>> t = []
>>> for a in s:
        for b in a:
            t.append(b)


>>> t
['a', 'b']