drop cython language_level on v3.0.0

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#78 opened on Apr 24, 2023 3 comments 0 reactions 0 assignees View on GitHub

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Assessment

Difficulty: 3/5
Estimated time: 1-2 days
Newbie friendliness: 35/100

Issue type: Refactor
Clarity: Mostly clear
Activity status: Stale
Tech stack: numpy, python
Domain: build-system

Research direction

Start by locating the Cython extension configuration and the conda and PyPI dependency metadata. Read the linked Cython 3 migration and NumPy C-API guidance, then verify that the language-level directive is removed, Cython 3.0 or newer is required, and the deprecated NumPy API warning is addressed.

Written by the indexing model from the issue text.

Description

Type: Tech Debt

Once cython 3.0.0 lands:

drop use of the cython language_level compiler directive (3str will be the default behaviour)
add a min pin for cython>=3.0 for conda and PyPI deps
address warning: #warning "Using deprecated NumPy API, disable it with " "#define NPY_NO_DEPRECATED_API NPY_1_7_API_VERSION" [-Wcpp], see
- https://cython.readthedocs.io/en/latest/src/userguide/migrating_to_cy30.html?highlight=NPY_NO_DEPRECATED_API#numpy-c-api
- https://cython.readthedocs.io/en/latest/src/tutorial/numpy.html?highlight=import_array#adding-types

See https://github.com/cython/cython/milestone/58

Dominant language: Jupyter Notebook
Stars: 30
Forks: 19
Avg merge: 9d 1h
Merged PRs (30d): 2

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