如何将嵌套列表列表转换为 python 3.3 中的元组列表？

How to convert nested list of lists into a list of tuples in python 3.3?

提问by Mohammed

I am trying to convert a nested list of lists into a list of tuples in Python 3.3. However, it seems that I don't have the logic to do that.

我正在尝试将嵌套列表列表转换为 Python 3.3 中的元组列表。但是，我似乎没有这样做的逻辑。

The input looks as below:

输入如下所示：

>>> nested_lst = [['tom', 'cat'], ['jerry', 'mouse'], ['spark', 'dog']]

And the desired ouptput should look as exactly as follows:

所需的输出应如下所示：

nested_lst_of_tuples = [('tom', 'cat'), ('jerry', 'mouse'), ('spark', 'dog')]

采纳答案by Martijn Pieters

Just use a list comprehension:

只需使用列表理解：

nested_lst_of_tuples = [tuple(l) for l in nested_lst]

Demo:

演示：

>>> nested_lst = [['tom', 'cat'], ['jerry', 'mouse'], ['spark', 'dog']]
>>> [tuple(l) for l in nested_lst]
[('tom', 'cat'), ('jerry', 'mouse'), ('spark', 'dog')]

回答by Ajit George

[tuple(l) for l in nested_lst]

回答by TerryA

You can use map():

您可以使用map()：

>>> list(map(tuple, [['tom', 'cat'], ['jerry', 'mouse'], ['spark', 'dog']]))
[('tom', 'cat'), ('jerry', 'mouse'), ('spark', 'dog')]

This is equivalent to a list comprehension, except that mapreturns a generator instead of a list.

这等效于列表推导式，除了map返回生成器而不是列表。