Secret Recipes of the Python Ninja

How to do it...

1. The following examples come from https://docs.python.org/3/library/collections.html#collections.OrderedDict. ordereddict_use.py, below, shows how to use OrderedDict to create a sorted dictionary:

      >>> from collections import OrderedDict      >>> d = {'banana': 3, 'apple': 4, 'pear': 1, 'orange': 2}            # regular unsorted dictionary      >>> OrderedDict(sorted(d.items(), key=lambda t: t[0]))            # dictionary sorted by key      OrderedDict([('apple', 4), ('banana', 3), ('orange', 2),                    ('pear', 1)])      >>> OrderedDict(sorted(d.items(), key=lambda t: t[1]))            # dictionary sorted by value      OrderedDict([('pear', 1), ('orange', 2), ('banana', 3),                    ('apple', 4)])      >>> OrderedDict(sorted(d.items(), key=lambda t: len(t[0])))   # dictionary sorted by length of ...