I got tired of print(x.shape) so I built runtime type hints for Python
As a beginner learning to build ML models, I found it annoying to have to keep printing tensor shapes every other line, having to step through the debugger to check where did I mess up the shapes again. So I built Trickle, it takes the data that flows through your code, caches the types and display them inline (as if you have type annotations). The idea is: "Let types trickle from runtime into your IDE". You get types in Python without having the write them manually. It works by rewriting your Python AST at import time — after every variable assignment, it inserts a lightweight call that…
I got tired of print(x.shape) so I built runtime type hints for Python launched on March 18, 2026 with 7 votes, #1,458 of 23,380 launches that month and more than 75% of that year's launches.
What it does
let types trickle from runtime to compile time. Contribute to yiheinchai/trickle development by creating an account on GitHub.
In the maker’s words, at launch
As a beginner learning to build ML models, I found it annoying to have to keep printing tensor shapes every other line, having to step through the debugger to check where did I mess up the shapes again. So I built Trickle, it takes the data that flows through your code, caches the types and display them inline (as if…
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