
David MacIver
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Aug 12, 2026
A Wild Hypothesis: The Python Library that Kills PhDs
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David MacIverGUEST
Uh, I wrote the original version of Hypothesis and got this whole mess started, I guess.

David MacIverGUEST
So Hypothesis originally came about because, uh, I was in the process of switching jobs, and, uh, in the course of switching jobs, I had to learn to use this new programming language called Python that I'd not written previously.

David MacIverGUEST
And, uh, I wanted to have a learning Python project, and I'd previously used QuickCheck and ScalaCheck a little bit.

David MacIverGUEST
And so I was, like, medium familiar with property-based testing, like, not a huge, uh, not hugely experienced, not a huge fan, but, like, I liked it, I'd used it, and it seemed like a good p- uh, project.

David MacIverGUEST
So I just threw together a little implementation of it in Python, put it up on PyPI, and, um, mostly forgot about it.
33 MINS LATER

