Hi all,

In the pull request: https://github.com/numpy/numpy/pull/14882 Eric proposes to deprecate the type aliases which NumPy imports into its main namespace (e.g. np.int, np.bool, see table below [1]).

Right now there seems to be a consensus to move this forward and I plan on doing that, so this is a heads-up in case anyone has a differing opinion.

The deprecation should not be very noisy as such, but I expect it will require many projects to update their code in the long run (although the changes are very simple).

One advantage is that some aliases are confusing, e.g. `np.float` is Python float, and thus actually a `float64` and not a C `float`, which is a `float32`.

For an example of how this affects a code-base, this is SciPy: https://github.com/scipy/scipy/pull/12344/commits/02def703b8b7b28ed315a65880... (A chunk of the full PR unrelated style fixes).

Cheers,

Sebastian

[1] Full table of deprecated aliases:

================== ===================== ============================ Deprecated Equivalent to Possibly intended numpy type ================== ===================== ============================ ``numpy.bool`` ``bool`` `numpy.bool_` ``numpy.int`` ``int`` `numpy.int_` (default int dtype), `numpy.cint` (C ``int``) ``numpy.float`` ``float`` `numpy.float_`, `numpy.double` (equivalent) ``numpy.complex`` ``complex`` `numpy.complex_`, `numpy.cdouble` (equivalent) ``numpy.object`` ``object`` `numpy.object_` ``numpy.str`` ``str`` `numpy.str_` ``numpy.long`` ``numpy.compat.long`` `numpy.int_` (C ``long``), `numpy.longlong` (largest integer type) ``numpy.unicode`` ``numpy.compat.str`` `numpy.unicode_` ================== ===================== ==========================