The reason of using itertools.chain.from_iterable to produce the polygon coordinates list · Issue #606 · facebookresearch/detectron2 · GitHub
Bug] Using `filter` in `itertools.chain` makes them both infer wrong types. · Issue #8226 · python/mypy · GitHub
![Every Python 🐍 programmer should learn about `itertools`. It's a great module with lots of elegant and efficient tools! 🚀 You'll write better co - Thread from Rodrigo 🐍🚀 @mathsppblog - Rattibha Every Python 🐍 programmer should learn about `itertools`. It's a great module with lots of elegant and efficient tools! 🚀 You'll write better co - Thread from Rodrigo 🐍🚀 @mathsppblog - Rattibha](https://pbs.twimg.com/media/FtrCqxLXsAEHI0s.jpg)