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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