[Numpy-discussion] Setting WRITEABLE flag on array scalar

[Stefan van der Walt]

Hi all,

We currently use an array scalar of value False as the mask in
MaskedArray.  I would like to make sure that the mask value cannot be
modified, but when I try

import numpy as np
x = np.bool_(False)
x.flags['WRITEABLE'] = False

I am warned that you "Cannot set flags on array scalars.".  Is there
any reason why this is prohibited?  Which is the best way around it?

Thanks for any feedback.

Stéfan