PUBLIC MARKS from mbertier with tag oop

There are a million ways a program can be written, but only a subset of those are agile, maintainable designs. How do you go about finding them?

That way you have to go out of your way to override something that wasn't designed. If you don't explicitly open the seal, then the compiler only allows normal inheritance, but if you use the seal-opening mechanism then the compiler will hand over the trust to you - and you are responsible for the consequences. So I'd prefer to replace Josh Bloch's 'prohibit' with a 'discourage'.

If I have a specific interface which I know is going to be implemented by a number of classes, but there is no implementation commonality between them, what is the preferred form for this in Python?

A new way of thinking about and tagging a document's table of contents and other supporting features makes sense and is more convenient.

Refactoring is a disciplined technique for restructuring an existing body of code, altering its internal structure without changing its external behavior.

We are enthousiastic software developers trying to put agile principles in practice.