Python’s been the language of data science since before machine learning was trendy, and now you can use it for building AI ...

Deferred evaluation of annotations Type annotations in Python have historically been evaluated “eagerly,” meaning when they’re first encountered in code.

That site has documentation, tutorials and even information for people using Python 2 who want to introduce mypy via comments (rather than annotations). You can read more about the origins of type ...

One of the most popular answers is a system known as mypy, which takes advantage of Python 3's type annotations for its own purposes. Using mypy means that you can write and run Python in the normal ...

This is clearly not what you wanted to do. Python versions 3.6 and higher provide “type annotations,” a feature that enables you to define the type of data each function argument should take.

Type annotations Python is a dynamically-typed language, which means if you try to mix variables that have different data types, it usually finds a way to resolve the difference or raises an ...