如何将字典转换为元组列表? [英] How can I convert a dictionary into a list of tuples?

问题描述

如果我有这样的字典:

{ 'a': 1, 'b': 2, 'c': 3 }

如何将其转换为此?

[ ('a', 1), ('b', 2), ('c', 3) ]

如何将其转换为此?

[ (1, 'a'), (2, 'b'), (3, 'c') ]

推荐答案

>>> d = { 'a': 1, 'b': 2, 'c': 3 }
>>> d.items()
[('a', 1), ('c', 3), ('b', 2)]
>>> [(v, k) for k, v in d.iteritems()]
[(1, 'a'), (3, 'c'), (2, 'b')]

它不是您想要的顺序，但是字典没有任何特定的顺序. ¹ 对其进行排序或根据需要进行组织.

It's not in the order you want, but dicts don't have any specific order anyway.¹ Sort it or organize it as necessary.

请参阅: items()，在Python 3.x中，您将不使用iteritems(不再存在)，而使用items，现在它返回词典项目的视图".请参见新功能文档(适用于Python 3.0)和新的视图文档.

In Python 3.x, you would not use iteritems (which no longer exists), but instead use items, which now returns a "view" into the dictionary items. See the What's New document for Python 3.0, and the new documentation on views.

^{1:字典的插入顺序保留为在Python 3.7中添加}

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