A code path and test have been in the code since NumPy 0.4 for a

two-argument variant of ``__array__(dtype=None, context=None)``. It was

activated when calling ``ufunc(op)`` or ``ufunc.reduce(op)`` if

``op.__array__`` existed. However that variant is not documented, and it

is not clear what the intention was for its use.

The code was something like

try:

op.__array__(dtype, context)

except TypeError:

op.__array__(dtype)

In PR 15118

https://github.com/numpy/numpy/pull/15118 I proposed to

remove this, so the call is now simply

op.__array__(dtype)

or `op.__array__()` if there is no dtype

Does anyone need the undocumented two-argument variant?

Matti

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