basemap does not "pip install" cleanly under Python 3.13. Might be related to some of the pinned upper versions of package dependencies? This environment had numpy 1.26.4 installed (so not a numpy 2.0 ...
The recently released numpy 2.0 appears to be incompatible with latest basemap version 1.4.1. Seems to be a common issue with packages compiled against older versions of numpy. Issue observed on ...