如何在Python中对dicts列表进行排序
问题:在使用MongoDB组合函数(它类似于SQL的GROUP BY)来聚合项目的一些结果。此功能虽然非常酷,但它不会对分组数据进行排序。
解决:以下是如何对数据进行排序。(它只有一行Python,但很难记住如何做到这一点。)
DATA是mongoDB组函数的输出。我想按照这个列表来排序'ups_ad'。
from pprint import pprintDATA = [ {u'avg': 2.9165000000000001, u'count': 10.0, u'total': 29.165000000000003, u'ups_ad': u'10.194.154.49:80'}, {u'avg': 2.6931000000000003, u'count': 10.0, u'total': 26.931000000000001, u'ups_ad': u'10.194.155.176:80'}, {u'avg': 1.9860909090909091, u'count': 11.0, u'total': 21.847000000000001, u'ups_ad': u'10.195.71.146:80'}, {u'avg': 1.742818181818182, u'count': 11.0, u'total': 19.171000000000003, u'ups_ad': u'10.194.155.48:80'} ]data_sorted = sorted(DATA, key=lambda item: item['ups_ad'])pprint(data_sorted)
结果:
[{u'avg': 2.9165000000000001, u'count': 10.0, u'total': 29.165000000000003, u'ups_ad': u'10.194.154.49:80'}, {u'avg': 2.6931000000000003, u'count': 10.0, u'total': 26.931000000000001, u'ups_ad': u'10.194.155.176:80'}, {u'avg': 1.742818181818182, u'count': 11.0, u'total': 19.171000000000003, u'ups_ad': u'10.194.155.48:80'}, {u'avg': 1.9860909090909091, u'count': 11.0, u'total': 21.847000000000001, u'ups_ad': u'10.195.71.146:80'}]
参考文献:
HowTo / Sorting – PythonInfo Wiki
排序的内置函数 – Python文档
来源:PY学习网:原文地址:https://www.py.cn/article.html