Tuple[Callable, Any, ...]

Posted on Mon, 29 Jan 2018 in Python • Tagged with typing, mypy, python

Type hints could help you a lot with a big Python project. However, they sometimes require code refactoring. I wrote about it last year in this article, but I have found a good example for this only now.


Continue reading

How to add type hints into Python 2.7 project

Posted on Mon, 11 Dec 2017 in Python • Tagged with typing, mypy, python

Many times I wrote that type hints in Python help to work with big or moderate projects. However, if you decide to add them to your project, you have to check your project regularly using CI. And this kind of checks is not easy to implement. This article is my story about obstacles in this process.

I'm trying to add type hints to our project for a while. And now I have a bunch of methods how to do it more efficiently, fast, and painless. I spend many days trying to find them. Now I want to share my experience.


Continue reading

How to use mypy on Python 2.7 project

Posted on Fri, 29 Jul 2016 in Python • Tagged with python, mypy, type hinting

If you work on a big Python project, type hinting can help you to find many design and function usage problems. Of course, you have to use external tools for static analysis, such as mypy. This is a great tool, but supports Python 3 mainly. Support for 2.7 branch isn't so straightforward. There are a couple of tricks that allows you to use it for 2.7.


Continue reading