Sorting associative arrays in Python

This question already has an answer here:

How do I sort a list of dictionaries by values of the dictionary in Python? 17 answers

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Use the sorted function's key parameter:

sorted(people, key=lambda dct: dct['name'])

There is an excellent Sorting HOWTO which explains how this works.

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>>> people = [
    {'name' : 'Bob', 'number' : '123'},
    {'name' : 'Bill', 'number' : '234'},
    {'name' : 'Dave', 'number' : '567'},
]       
>>> sorted(people, key=lambda dct: dct['name'])
[{'name': 'Bill', 'number': '234'}, 
 {'name': 'Bob', 'number': '123'}, 
 {'name': 'Dave', 'number': '567'}]

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Alternatively, you could use

import operator
sorted(people, key=operator.itemgetter('name'))

Using operator.itemgetter('name') is slightly faster than using lambda dct: dct['name'] .

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