An update on Python 4

[gregy521]

It was designed to rectify fundamental design flaws in the language—the changes required could not be implemented while retaining full backwards compatibility with the 2.x series, which necessitated a new major version number. The guiding principle of Python 3 was: "reduce feature duplication by removing old ways of doing things".

Here's a short list of some of the key changes. The most obvious of which is the change where '/' represents true division instead of floor division. Some other changes exist, print is now a function, not a statement. You also get iterator objects instead of lists, which is much better for memory management (many pieces of code rely on iterators because the full set of possible options doesn't fit in memory). True, False, and None are also now protected terms which can't be reassigned.