Python从OrderedDict中提取值

Question

我如何选择＆＃39; FirstName＆＃39;在Python中使用OrderedDict？

OrderedDict([(u'totalSize', 1),
             (u'done', True),
             (u'records',
             [OrderedDict([
             (u'attributes',
             OrderedDict([
             (u'type', u'Contact'),
(u'url',u'/services/data/v38.0/sobjects/Contact/003290000089vSgAAI')])), 
(u'FirstName', u'John'), (u'LastName', u'Smith')])])])

Answer 1

>>> from collections import OrderedDict
>>> a = OrderedDict([('totalSize', 1), ('done', True), ('records', [OrderedDict([('attributes', OrderedDict([('type', 'Contact'), ('url', '/services/data/v38.0/sobjects/Contact/003290000089vSgAAI')])), ('FirstName', 'John'), ('LastName', 'Smith')])])])
>>> a['records'][0]['FirstName']
'John'

内部OrderedDict对象在列表中（此列表仅包含OrderedDict对象）