How deeply does Software Design for Python Programmers cover Map?

Explains keys, values, immutability, uniqueness, typed validation, matching, formatting, and catalogue searches.

Map

As explained in Software Design for Python Programmers

A dictionary is a collection that maps unique immutable keys to values.

A dictionary stores key–value pairs: each unique, immutable key retrieves its associated value, while values may repeat and use any type. This structure fits designs that must represent changing name–value attributes without duplicating subclasses. section 2.3.4

Book attributes as a dictionary

Represent a book with enumeration keys and typed values: {KIND: Kind.FICTION, TITLE: "Life of Pi", LAST: "Martel", YEAR: 2003, GENRE: Genre.ADVENTURE}. An Attributes object can validate values, compare only requested key–value pairs, and support searches such as LAST: "KING" without separate attribute subclasses. section 2.3.4

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Related concepts

data structurekind of · A data structure is an organized representation of data and its relationships that supports defined operations for storing, accessing, or modifying it.
name-value pairhas part · A name-value pair is a data association in which an identifying name or key corresponds to a value.
OrderedDictincludes · OrderedDict is a Python dictionary subclass that preserves insertion order and provides operations for explicitly rearranging entries.
arrayuses · An array is an indexed, ordered collection of elements arranged in one or more dimensions, with elements accessed by position.
dict.getused by · dict.get is a Python dictionary method that returns the value for a key or a specified default when the key is absent.
membership operatorused by · A membership operator is a language construct that tests whether a specified value or property is present in a supported collection, range, or object.

This explainer was generated by Manning's knowledge graph from the text of Software Design for Python Programmers. The section links point to the parts of the book it draws on.