jdh208

Same issue here with Python 3.11.4, NumPy 1.25.1, SciPy 1.11.1 Edit: @kykyi had a [workable solution ](https://github.com/ing-bank/sparse_dot_topn/issues/84#issuecomment-1641719087) pip install cython==0.29.36 numpy pip install sparse_dot_topn_for_blocks --no-build-isolation