[Numpy-discussion] Should ndarray be a context manager?

Sturla Molden sturla.molden at gmail.com
Wed Dec 10 02:25:44 EST 2014

Nathaniel Smith <njs at pobox.com> wrote:

> This should be pretty trivial to implement. AFAICT you don't need any
> complicated cython

I have a bad habit of thinking in terms of too complicated C instead of
just using NumPy.

> @contextmanager
> def tmp_zeros(*args, **kwargs):
>     arr = np.zeros(*args, **kwargs)
>     try:
>         yield arr
>     finally:
>         arr.resize((0,), check_refs=False)
> Given how intrinsically dangerous this is, and how easily it can be
> implemented using numpy's existing public API, I think maybe we should
> leave this for third-party daredevils instead of implementing it in numpy
> proper.

It seems so :-)


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