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Pants

Hey Pants Team, I’m curious to learn about the decision to use `mypy` as the default type checking tool. Were there any other considerations at the time?

We'd be welcome to other type checkers! We intentionally structured the folder to be python/typecheck/mypy, rather than python/mypy, so that we can add others. 

The decision was based on popularity and also internal usage for the pants project

a few people mentioned `pyright` at work recently which claims to be better at type checking async/await pieces, but it’s npm :confused:

hmm that’s interesting. We’re currently comparing <https://github.com/facebook/pyre-check|pyre>/ <https://github.com/Microsoft/pyright|pyrite>/<https://github.com/python/mypy|mypy>. I’ve only used `mypy` in my experience so was curious how the others would be better suited.

our priorities for this decision is *correctness, ease of integration, and industry usage.* Also having PyCharm support is big plus here. Performance is not a deal breaker.

have never done that comparison myself… would be interested in any resources that you found useful in making your decision!