Question

我有一个有序的字典，其中包含一个有序的字典，如：

OrderedDict([(u'catalog', OrderedDict([(u'book', [OrderedDict([(u'@id', u'bk101'), (u'author', OrderedDict([(u'@a_id', u'a101'), (u'first', u'Gambardella'), (u'last', u'Matthew'), (u'email', u'matthew@standford.org')])), (u'title', u"XML Developer's Guide"), (u'genre', u'Computer'), (u'price', u'44.95'), (u'publish_date', u'2000-10-01'), (u'description', u'An in-depth look at creating applications \n      with XML.')]), OrderedDict([(u'@id', u'bk102'), (u'author', u'Ralls, Kim'), (u'title', u'Midnight Rain'), (u'genre', u'Fantasy'), (u'price', u'5.95'), (u'publish_date', u'2000-12-16'), (u'description', u'A former architect battles corporate zombies, \n      an evil sorceress, and her own childhood to become queen \n      of the world.')]), OrderedDict([(u'@id', u'bk103'), (u'author', u'Corets, Eva'), (u'title', u'Maeve Ascendant'), (u'genre', u'Fantasy'), (u'price', u'5.95'), (u'publish_date', u'2000-11-17'), (u'description', u'After the collapse of a nanotechnology \n      society in England, the young survivors lay the \n      foundation for a new society.')]), OrderedDict([(u'@id', u'bk104'), (u'author', u'Corets, Eva'), (u'title', u"Oberon's Legacy"), (u'genre', u'Fantasy'), (u'price', u'5.95'), (u'publish_date', u'2001-03-10'), (u'description', u'In post-apocalypse England, the mysterious \n      agent known only as Oberon helps to create a new life \n      for the inhabitants of London. Sequel to Maeve \n      Ascendant.')]), OrderedDict([(u'@id', u'bk105'), (u'author', u'Corets, Eva'), (u'title', u'The Sundered Grail'), (u'genre', u'Fantasy'), (u'price', u'5.95'), (u'publish_date', u'2001-09-10'), (u'description', u"The two daughters of Maeve, half-sisters, \n      battle one another for control of England. Sequel to \n      Oberon's Legacy.")]), OrderedDict([(u'@id', u'bk106'), (u'author', u'Randall, Cynthia'), (u'title', u'Lover Birds'), (u'genre', u'Romance'), (u'price', u'4.95'), (u'publish_date', u'2000-09-02'), (u'description', u'When Carla meets Paul at an ornithology \n      conference, tempers fly as feathers get ruffled.')]), OrderedDict([(u'@id', u'bk107'), (u'author', u'Thurman, Paula'), (u'title', u'Splish Splash'), (u'genre', u'Romance'), (u'price', u'4.95'), (u'publish_date', u'2000-11-02'), (u'description', u'A deep sea diver finds true love twenty \n      thousand leagues beneath the sea.')]), OrderedDict([(u'@id', u'bk108'), (u'author', u'Knorr, Stefan'), (u'title', u'Creepy Crawlies'), (u'genre', u'Horror'), (u'price', u'4.95'), (u'publish_date', u'2000-12-06'), (u'description', u'An anthology of horror stories about roaches,\n      centipedes, scorpions  and other insects.')]), OrderedDict([(u'@id', u'bk109'), (u'author', u'Kress, Peter'), (u'title', u'Paradox Lost'), (u'genre', u'Science Fiction'), (u'price', u'6.95'), (u'publish_date', u'2000-11-02'), (u'description', u'After an inadvertant trip through a Heisenberg\n      Uncertainty Device, James Salway discovers the problems \n      of being quantum.')]), OrderedDict([(u'@id', u'bk110'), (u'author', u"O'Brien, Tim"), (u'title', u'Microsoft .NET: The Programming Bible'), (u'genre', u'Computer'), (u'price', u'36.95'), (u'publish_date', u'2000-12-09'), (u'description', u"Microsoft's .NET initiative is explored in \n      detail in this deep programmer's reference.")]), OrderedDict([(u'@id', u'bk111'), (u'author', u"O'Brien, Tim"), (u'title', u'MSXML3: A Comprehensive Guide'), (u'genre', u'Computer'), (u'price', u'36.95'), (u'publish_date', u'2000-12-01'), (u'description', u'The Microsoft MSXML3 parser is covered in \n      detail, with attention to XML DOM interfaces, XSLT processing, \n      SAX and more.')]), OrderedDict([(u'@id', u'bk112'), (u'author', OrderedDict([(u'@a_id', u'a007'), (u'first', u'Galos'), (u'last', u'Mike'), (u'email', u'mike@gmail.com')])), (u'title', u'Visual Studio 7: A Comprehensive Guide'), (u'genre', u'Computer'), (u'price', u'49.95'), (u'publish_date', u'2001-04-16'), (u'description', u'Microsoft Visual Studio 7 is explored in depth,\n      looking at how Visual Basic, Visual C++, C#, and ASP+ are \n      integrated into a comprehensive development \n      environment.')])])]))])

我想迭代这本字典，并希望将其转换为普通字典。

这是怎么可能的......

Answer 1

正如评论中mu所说，为什么你想要这样做并不是很清楚。 OrderedDict就像字典一样，只有极少数例外。

但是对于您的具体输入，您可以通过以下方式完成此任务：

from collections import OrderedDict
d1 = OrderedDict(<snip>)

def convert(e):
    if isinstance(e, (dict, OrderedDict)):
        return {k:convert(v) for k,v in e.iteritems()}
    if isinstance(e, list):
        return [convert(v) for v in e]
    return e

d2 = convert(d1)

import pprint
pprint.pprint(d2)

输出（pprint.pprint(d2)）的“头部”如下所示：

{u'catalog': {u'book': [{u'@id': u'bk101',
                         u'author': {u'@a_id': u'a101',
                                     u'email': u'matthew@standford.org',
                                     u'first': u'Gambardella',
                                     u'last': u'Matthew'},
                         u'description': u'An in-depth look at creating applications \n      with XML.',
                         u'genre': u'Computer',
                         u'price': u'44.95',
                         u'publish_date': u'2000-10-01',
                         u'title': u"XML Developer's Guide"},
                        {u'@id': u'bk102',
                         u'author': u'Ralls, Kim',
                         u'description': u'A former architect battles corporate zombies, \n      an evil sorceress, and her own childhood to become queen \n      of the world.',
                         u'genre': u'Fantasy',
                         u'price': u'5.95',
                         u'publish_date': u'2000-12-16',
                         u'title': u'Midnight Rain'},

将有序字典转换为python中的普通字典

1 个答案: