How to order a dictionary by the key alphabetically

Question

from collections import OrderedDict
dictionary = {"Charlie": [[7]], "Alex": [[4]], "Brandon": [[8]]}
OrderedDict(sorted(dictionary.items(), key=lambda x: x[0]))
print(dictionary)

Okay I am trying to order my dictionary by the key, in alphabetical order, but the dictionary doesn't change order after the 3rd line of code as seen above. Can anyone help me with a solution?

possible duplicate of [How to sort dictionary by key in alphabetical order Python](http://stackoverflow.com/questions/22264956/how-to-sort-dictionary-by-key-in-alphabetical-order-python) — Nir Alfasi, Jan 20 '15 at 19:26
Also duplicate of this: http://stackoverflow.com/questions/9001509/python-dictionary-sort-by-key (I actually like the answers better) — moooeeeep, Jan 20 '15 at 20:06

score 3 · Accepted Answer · 2015-01-20T19:31:01.880

OrderedDict is not a function which orders dictionaries. That is impossible since dictionaries are naturally unordered in Python. Instead, OrderedDict is a special kind of dictionary that supports ordered items.

If you want to use an OrderedDict in your code, you will need to save it in a variable:

ordered_dict = OrderedDict(sorted(dictionary.items(), key=lambda x: x[0]))

Note however that dictionary will still be unordered after this operation; the line above only uses the items in dictionary to construct a new OrderedDict object.

score 1 · Answer 2 · answered Jan 20 '15 at 19:24

1

You will have to assign it back to dictionary as it is not in-place

dictionary = OrderedDict(sorted(dictionary.items(), key=lambda x: x[0]))

Now your o/p will be as expected

OrderedDict([('Alex', [[4]]), ('Brandon', [[8]]), ('Charlie', [[7]])])

answered Jan 20 '15 at 19:24

Bhargav Rao

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score 1 · Answer 3 · answered Jan 20 '15 at 19:24

1

You dont need key for your sorted function :

>>> OrderedDict(sorted(dictionary.items()))
OrderedDict([('Alex', [[4]]), ('Brandon', [[8]]), ('Charlie', [[7]])])

answered Jan 20 '15 at 19:24

Mazdak

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How to order a dictionary by the key alphabetically

3 Answers3