Question

我试图通过执行以下操作对以下OrderedDict进行排序 - ＆gt;

EXPORT TO MyFile.DEL OF DEL LOBS TO . LOBFILE lob 
MODIFIED BY lobsinsepfiles
SELECT ...

>>> from collections import OrderedDict >>> d = OrderedDict([(4995L, [{'isbn_13': u'9788131805923', 'book_quantity': 49L, 'seller_book_id': 4995L, 'book_id': 4995L, 'title': u'Industrial Automation and Robotics', 'selling_price': 292.0, 'id': 4995L, 'condition': 'New Book'}]), (6657L, [{'isbn_13': u'9788122425925', 'book_quantity': 49L, 'seller_book_id': 6657L, 'book_id': 6657L, 'title': u'A Textbook of Agricultural Statistics', 'selling_price': 243.0, 'id': 6657L, 'condition': 'New Book'}]), (6137L, [{'isbn_13': u'9788122425727\n', 'book_quantity': 50L, 'seller_book_id': 6137L, 'book_id': 6137L, 'title': u'A Guide to Corporate Governance', 'selling_price': 247.0, 'id': 6137L, 'condition': 'New Book'}]), (6260L, [{'isbn_13': u'9788122414394\n', 'book_quantity': 50L, 'seller_book_id': 6260L, 'book_id': 6260L, 'title': u'Management Accounting \n', 'selling_price': 269.0, 'id': 6260L, 'condition': 'New Book'}])]) >>> OrderedDict(sorted(d.items(), key=lambda item: item[1][0]['selling_price']))属性。但我无法做到。

我尝试将此How to sort OrderedDict of OrderedDict - Python中讨论的概念应用于普通的OrderedDict，但它不起作用。有人可以帮帮我吗？

Answer 1

解决方案

这适用于有序字典d：

OrderedDict(sorted(d.items(), key=lambda item: item[1][0]['selling_price']))

应用

>>> d
OrderedDict([(7484,
              [{'book_id': 7484,
                'book_quantity': 43,
                'condition': 'New Book',
                'id': 7484,
                'isbn_13': '9788131727591',
                'seller_book_id': 7484,
                'selling_price': 629.0,
                'title': 'Network Management:  Principles and Practice,  2/e'}]),
             (7485,
              [{'book_id': 7484,
                'book_quantity': 43,
                'condition': 'New Book',
                'id': 7484,
                'isbn_13': '9788131727591',
                'seller_book_id': 7484,
                'selling_price': 29.0,
                'title': 'Network Management:  Principles and Practice,  2/e'}])])

>>> OrderedDict(sorted(d.items(), key=lambda item: item[1][0]['selling_price']))
OrderedDict([(7485,
              [{'book_id': 7484,
                'book_quantity': 43,
                'condition': 'New Book',
                'id': 7484,
                'isbn_13': '9788131727591',
                'seller_book_id': 7484,
                'selling_price': 29.0,
                'title': 'Network Management:  Principles and Practice,  2/e'}]),
             (7484,
              [{'book_id': 7484,
                'book_quantity': 43,
                'condition': 'New Book',
                'id': 7484,
                'isbn_13': '9788131727591',
                'seller_book_id': 7484,
                'selling_price': 629.0,
                'title': 'Network Management:  Principles and Practice,  2/e'}])])

按'selling_price': 29.0排序小于'selling_price': 629.0。

在OrderedDict中如何按特定属性排序？

1 个答案:

解决方案

应用