November 2018
Beginner
304 pages
7h 35m
English
Content preview from Learn Programming in Python with Cody Jackson
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Dictionaries
Next to lists, dictionaries are one of the most useful data types in Python. Python lists, as previously shown, are ordered collections that use a numerical offset. To select an item in a list, you need to know its position within the list. Python dictionaries are unordered collections of objects, matched to a key name; in other words, you can reference an item simply by knowing its associated key.
Because of their construction, dictionaries can replace many typical search algorithms and data structures found in C and related languages. For those coming from other languages, Python dictionaries are just like a hash table or associative array, where an object is mapped to a key name.
Dictionaries include the following properties: ...
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