Python列表排序，对lis中的字典进行排序

Question

我希望基本上有一个我的字典列表排序如下：

similarity = [{'Ben': 49}, {'Moose': 18}, {'Reuven': 39}, {'Cust1': 58}, {'Cust2': 10}, {'Francois': 58}, {'Jim C': 39}, {'Iren': 13}, {'Cust3': 13}]

如有任何帮助，我们将不胜感激。你知道吗

Answer 1

这是一种方法。你知道吗

>>> sorted(similarity, key=lambda x: x.values()[0])
[{'Cust2': 10}, {'Iren': 13}, {'Cust3': 13}, {'Moose': 18}, {'Reuven': 39}, {'Jim C': 39}, {'Ben': 49}, {'Cust1': 58}, {'Francois': 58}]

Answer 2

您应该在此处使用元组列表：

>>> lst = [d.items()[0] for d in similarity]
>>> lst
[('Ben', 49), ('Moose', 18), ('Reuven', 39), ('Cust1', 58), ('Cust2', 10), ('Francois', 58), ('Jim C', 39), ('Iren', 13), ('Cust3', 13)]

然后你可以像往常一样把它们分类。你知道吗

>>> from operator import itemgetter
>>> sorted(lst, key=itemgetter(1))
[('Cust2', 10), ('Iren', 13), ('Cust3', 13), ('Moose', 18), ('Reuven', 39), ('Jim C', 39), ('Ben', 49), ('Cust1', 58), ('Francois', 58)]

如果需要，还可以使用一个ordered dictionary来保存以下值：

>>> from collections import OrderedDict
>>> OrderedDict(sorted(lst, key=itemgetter(1)))
OrderedDict([('Cust2', 10), ('Iren', 13), ('Cust3', 13), ('Moose', 18), ('Reuven', 39), ('Jim C', 39), ('Ben', 49), ('Cust1', 58), ('Francois', 58)])