Design Pattern

Python: A dict, Pandas DataFrame, or NumPy array is NOT a specification of services. Wrap them in a class with clear responsibilities, and methods for specific VALUE-ADDING services for consumption by clients via a pure abstract class as interface.

Lazy initialisation (lazy loading) in Python and the Webel Cascading Lazy Pattern

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Cascading lazy initialisation (pull lazy, pull lazy, pull lazy), is your very good friend.

Cascading lazy initialisation (aka lazy instantiation or lazy loading) helps promote a more pure functional approach within lazy zones, helps reduce bad coupling, makes dependencies and the creation cycle clearer, and can be implemented in nearly any language. Including in Python.

Service: Model-based and model-driven software architecture and software engineering

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For Python software engineering services please visit also: Service: Python and REST web services development including OpenAPI with FastAPI and POSTman testing

For Java™ enterprise web application development visit also: Jakarta EE and Jakarta EE for microservices and REST APIs.

Simplx Pty Ltd

Contexts and Dependency Injection (CDI) zone

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Based on decades of experience with Design Patterns and Enterprise Java web applications - and other types of Java applications too - Contexts and Dependency Injection (CDI) is a thing of architectural beauty and wonder!

Service: Model-driven Analysis and Design [REFERRAL PAGE]

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This service is now more completely described here:

Service: Model-based and model-driven software architecture and software engineering

Visit also: Dr Darren explains: What is analysis modelling for software engineering with Systems Modeling Language (SysML)?

Webel promotes graphical, model-based development tec

Java zone

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