Python type hints are used ahead of time, by the type-checking system; for instance, in your editor or IDE. ... How to use template strings in Python 3.14. May 14, 2025 6 mins. feature.

Python 3.14 has a new feature called the template string, or t-string, type. A t-string superficially resembles an f-string, but it’s designed to do something very different.

Microsoft's Python Language Server Pylance uses type information to implement useful features like autocompletion and type checking. For best results, type annotations must be provided for functions, ...

I've grabbed Sequence from the typing module, which includes all three Python sequence types—strings, lists and tuples. Once I do that, all of the mypy problems disappear, because all of the arguments ...

This leads to a situation where every optional string field has to be type-checked (bytes or str) upon deserialization, assuming you need to get a string. There is also the issue that the method named ...