In Python, a SyntaxError happens when the interpreter finds code that does not conform to the rules of the Python language.

Python 3 introduced the idea of "type annotations," and as of Python 3.6, you can annotate variables, not just function parameters and return values. The idea is that you can put a colon (:) and then ...

Functions that work with objects that can be represented in pure C, such as basic numerical types, arrays, or structures, rather than Python object types like lists, dictionaries, or tuples.

Ubuntu is a free computer system, like Windows or macOS, but it’s built by a community. It’s great for programmers because it’s very flexible and has lots of tools already built-in that help you code.

Learn how to use Python’s optional type-hinting syntax to create cleaner and more useful code.