从namedtuple获取值的名称

Question

我有一个带集合的模块:

import collections
named_tuple_sex = collections.namedtuple(
                    'FlightsResultsSorter',
                        ['TotalPriceASC',
                         'TransfersASC',
                         'FlightTimeASC',
                         'DepartureTimeASC',
                         'DepartureTimeDESC',
                         'ArrivalTimeASC',
                         'ArrivalTimeDESC',
                         'Airlines']
                    )
FlightsResultsSorter = named_tuple_sex(
    FlightsResultsSorter('TotalPrice', SortOrder.ASC),
    FlightsResultsSorter('Transfers', SortOrder.ASC),
    FlightsResultsSorter('FlightTime', SortOrder.ASC),
    FlightsResultsSorter('DepartureTime', SortOrder.ASC),
    FlightsResultsSorter('DepartureTime', SortOrder.DESC),
    FlightsResultsSorter('ArrivalTime', SortOrder.ASC),
    FlightsResultsSorter('ArrivalTime', SortOrder.DESC),
    FlightsResultsSorter('Airlines', SortOrder.ASC)
)

在另一个模块中,我按此集合进行迭代,我想得到项目的名称:

for x in FlightsResultsSorter:
            self.sort(x)

所以在代码中我想要代替x(对象)传递例如"DepartureTimeASC"或"ArrivalTimeASC".

我怎么能得到这个名字？

最好的祝福

Answer 1

如果您要获取实际名称,请使用以下_fields属性:

In [50]: point = collections.namedtuple('point', 'x, y')

In [51]: p = point(x=1, y=2)

In [52]: for name in p._fields:
   ....:     print name, getattr(p, name)
   ....:
x 1
y 2

Answer 2

from itertools import izip

for x, field in izip(FlightsResultsSorter, named_tuple_sex._fields):
    print x, field

你也可以FlightsResultsSorter._asdict()用来获得一个字典.