Are There Any Datetime.tzinfo Implementations In C?

I've been working on a Python library that uses a C extension module to do ISO 8601 parsing. Part of that work requires the creation of tzinfo objects, which is by far the slowest

Solution 1:

After searching some more, I ended up finding an implementation in Pendulum's low level ISO 8601 parser.

Edit: This implementation was eventually used in my backport of datetime.fromisoformat