Two words: typing, mypy [1] The editor support that I get from typing/mypy is fantastic! It feels like writing in a statically typed language. To me this is by

Two words: typing, mypy [1] The editor support that I get from typing/mypy is fantastic! It feels like writing in a statically typed language. To me this is by far the most important feature of Python3. It's a godsend for larger/complicated code bases. [1]: https://github.com/python/mypy https://github.com/python/mypy