FWIW, scipy has a small utility just for this:

https://github.com/scipy/scipy/blob/main/scipy/_lib/_util.py#L36

Not to be used in performance critical loops, of course. 

Cheers, 

Evgeni


сб, 18 февр. 2023 г., 17:02 David Pine <pine@nyu.edu>:
I agree.  The problem can be avoided in a very inelegant way by turning warnings off before calling where() and turning them back on afterward, like this

    warnings.filterwarnings("ignore", category=RuntimeWarning)
    result = np.where(x == 0.0, 0.0, 1./data)
    warnings.filterwarnings("always", category=RuntimeWarning)

But it would be MUCH nicer if there were an optional keyword argument in the where() call.

Thanks,
Dave
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