introduction.md

Dictionary Methods in Python

The dict class in Python provides many useful methods, some of which are introduced in the concept exercise for dictionaries.

This concept tackles a few more:

• dict.setdefault() automatically adds keys without throwing a KeyError.
• dict.fromkeys(iterable, <default value>) creates a new dict from any number of iterables.
• .keys(), .values(), and .items() provide convenient iterators.
• sorted(<dict>.items()). can easily re-order entries in a dict.
• dict_one.update(<dict_two>) updates one dict with overlapping values from another dict.
• dict | other_dict and dict |= other_dict merges or updates two dicts via operators.
• reversed(dict.keys()), reversed(dict.values()), or reversed(dict.items()) produce reversed views.
• <dict>.popitem() removes and returns a key, value pair.