How deeply does Practices of the Python Pro cover concern?

Defines concerns, demonstrates function extraction, and applies decomposition to classes, stopping short of low-level implementation theory.

Concern

As explained in Practices of the Python Pro

A distinct responsibility, requirement, or aspect of behavior that software must address.

A concern is a distinct behavior or piece of knowledge that software must address. Separating code by concern creates manageable pieces, reduces the knowledge you must hold in mind, and makes intent easier to follow. section 2.0

Separate concerns at several levels, choosing boundaries that reflect distinct activities:

Functions can isolate focused behaviors such as choosing input, printing options, or determining a result. section 2.2.1
Classes, modules, and packages can establish larger boundaries when responsibilities or knowledge begin to mix. section 2.0 section 9.3

Generalizing a group introduction

A fan-page function that knows both the Three Stooges title and how to introduce names mixes concerns. Extracting the title as an argument supports other groups, while join_names() separately handles name formatting. section 2.2.1

How Practices of the Python Pro covers it

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Related concepts

separation of concernsused by · Separation of concerns is a design principle that organizes a system so distinct responsibilities are handled by separate, independently manageable parts.
classused by · A class is a programming-language construct that defines a type’s structure or behavior and provides a basis for creating or representing objects.
objectcontrasts with · A computational object is a runtime entity or structured value representing data, state, or a resource, with properties or operations defined by its programming model.
responsibilityimplemented by · A responsibility is a duty, capability, or area of accountability assigned to a person, role, class, object, or other entity.

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