如何根据对象的时间戳值对列表进行排序

Question

I have an object called Orders . One of the field in orders is last_modified . the format of this field is 01-JAN-16 02.15.49.086630 PM

Then i have a list of these orders ie, orders_list . How can I sort this list based on last_modified value?

Answer 1

You can use sorted with a custom key. In this case, you need to convert your string field to datetime :

from datetime import datetime

date_format = '%d-%b-%y %H.%M.%S.%f %p'

res = sorted(orders_list, key=lambda x: datetime.strptime(x.last_modified, date_format))

See Python's strftime directives to see how to construct date_format .