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PyCoder���s Weekly: Issue #684: NumPy Type Hints, LEGB, Pyrefly vs ty, and More (June 3, 2025)
- Thanks to improvements in NumPy typing support, NumPy generic arrays can now type both shape and dtype, offering opportunities for improved static analysis and run-time validation.
- A video course is available to help understand the LEGB rule and Python scope, helping to avoid name collisions in code.
- A checklist to prevent Postgres slowdowns in Python apps by monitoring performance and maintenance, including slow query detection and optimizing indexes.
- Comparison between Python's new Rust-based type checkers, Pyrefly and ty, discussing performance and capabilities.
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