https://github.com/numpy/numpy/pull/116 This pull request deprecates direct access to PyArrayObject fields. This direct access has been discouraged for a while through comments in the header file and documentation, but up till now, there was no way to disable it. I've created such a mechanism, and C extensions can test that they don't use deprecated C API by #defining NPY_NO_DEPRECATED_API at the top of the C file. I've confirmed that scipy master builds against this branch, and its test failures look unrelated to these changes (iterative methods failures). Additional testing of different versions and platforms would be appreciated! This also includes a few other miscellaneous changes: - improve error message in PyArray_FromArray - some missingdata NEP changes - allow comma-separated dtype strings to include datetime metadata - http://projects.scipy.org/numpy/ticket/466 -Mark