Deprecation warning and shutdown

[9B8DY6]

When I use self.nufft_ob = tkbn.KbNufft(im_size=im_size, #grid_size=(256,256), ).to(self.dev),
I got warning and shutdown

DeprecationWarning: `np.complex` is a deprecated alias for the builtin `complex`. To silence this warning, use `complex` by itself. Doing this will not modify any behavior and is safe. If you specifically wanted the numpy scalar type, use `np.complex128` here.
Deprecated in NumPy 1.20; for more details and guidance: https://numpy.org/devdocs/release/1.20.0-notes.html#deprecations

but there is no problem with tkbn.ToepNufft()

and I want to know how to inverse NuFFT with toepliz.

Thank you

[kylematoba]

self.nufft_ob = tkbn.KbNufft(im_size=im_size, #grid_size=(256,256), ).to(self.dev), is not syntatically correct python?

Not clear what you mean by "shutdown", but the warning is just a warning -- you can ignore, suppress, or fix (by replacing instances of np.complex with complex) without changing the computation.

[mmuckley]

As far as I can tell this is not used anywhere in the core package (but it is used in some examples).

https://github.com/mmuckley/torchkbnufft/search?q=np.complex

We should probably update the examples, but in your case @9B8DY6 it seems your self.dev is np.complex.

[9B8DY6]

I solved this problem with filterwarning!