Hello,
In trying to upgrade NumPy within Sage, we notices some differences in behavior between 1.5 and 1.6. In particular, in 1.5, we have
sage: f = 0.5 sage: f.__array_interface__ {'typestr': '=f8'} sage: numpy.array(f) array(0.5) sage: numpy.array(float(f)) array(0.5)
In 1.6, we get the following,
sage: f = 0.5 sage: f.__array_interface__ {'typestr': '=f8'} sage: numpy.array(f) array(0.500000000000000, dtype=object)
This seems to be do to the changes in PyArray_FromAny introduced in https://github.com/mwhansen/numpy/commit/2635398db3f26529ce2aaea4028a8118844... . In particular, _array_find_type used to be used to query our __array_interface__ attribute, and it no longer seems to work. Is there a way to get the old behavior with the current code?
--Mike