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Secret Recipes of the Python Ninja
book

Secret Recipes of the Python Ninja

by Cody Jackson
May 2018
Intermediate to advanced content levelIntermediate to advanced
380 pages
9h 37m
English
Packt Publishing
Content preview from Secret Recipes of the Python Ninja

Implementing OrderedDict

Like Counter, the OrderedDict is a dictionary subclass the doesn't randomize the order of dictionary items. As items are added to the OrderedDict, it remembers the order that the keys were inserted and maintains that order. Even if a new entry overwrites an existing key, the position within the dictionary doesn't change. However, if an entry is deleted, re-inserting it will place it at the end of the dictionary.

OrderedDict, being a subclasses of dict, inherit all the methods available to dictionaries. There are also three special methods available to OrderedDict:

  • popitem(last=True): It returns and removes the key:value pair at the end of the dictionary. If last is not provided or manually set to True, then the ...

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Publisher Resources

ISBN: 9781788294874Supplemental Content