5.2. Annotating existing code

5.2.1. PyAnnotate

• http://mypy-lang.blogspot.com/2017/11/dropbox-releases-pyannotate-auto.html

The -w flag means "go ahead, update the file":

$ pip install pyannotate
$ pyannotate -w FILE

5.2.2. monkeytype

• https://instagram-engineering.com/let-your-code-type-hint-itself-introducing-open-source-monkeytype-a855c7284881

$ pip install monkeytype
$ monkeytype run runtests.py
$ monkeytype stub some.module
$ monkeytype apply some.module