用Pythonic方法按字段名称对namedtuple列表进行排序的方法 [英] Pythonic way to sorting list of namedtuples by field name

问题描述

我想对命名元组的列表进行排序，而不必记住字段名的索引.我的解决方案似乎很尴尬，希望有人能提供一个更优雅的解决方案.

I want to sort a list of named tuples without having to remember the index of the fieldname. My solution seems rather awkward and was hoping someone would have a more elegant solution.

from operator import itemgetter
from collections import namedtuple

Person = namedtuple('Person', 'name age score')
seq = [
    Person(name='nick', age=23, score=100),
    Person(name='bob', age=25, score=200),
]

# sort list by name
print(sorted(seq, key=itemgetter(Person._fields.index('name'))))
# sort list by age
print(sorted(seq, key=itemgetter(Person._fields.index('age'))))

谢谢， 尼克

推荐答案

from operator import attrgetter
from collections import namedtuple

Person = namedtuple('Person', 'name age score')
seq = [Person(name='nick', age=23, score=100),
       Person(name='bob', age=25, score=200)]

按名称对列表进行排序

sorted(seq, key=attrgetter('name'))

按年龄排序列表

sorted(seq, key=attrgetter('age'))

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