Many Pythonistas are familiar with using decorators, but far fewer understand what’s happening under the hood and can write their own. It takes a little effort to learn their subtleties but ...

The new “pure Python” syntax for Cython uses Python’s own syntax—decorators, type annotations, context managers—to be fully compatible with Python and its code-linting tools. The new ...

While Python has lacked a native syntax for pattern matching ... checkers to verify that matches can be verified. A new @sealed decorator for a class indicates to type checkers that any subclass ...