BUG: genfromtxt produce complex values with dtype object #16189
Description
Before #15534:
>>> np.genfromtxt(io.StringIO("1"), dtype=object)
array(b'1', dtype=object)
>>> np.genfromtxt(io.StringIO("what"), dtype=object)
array(b'what', dtype=object)After:
>>> np.genfromtxt(io.StringIO("1"), dtype=object)
array((1+0j), dtype=object)
>>> np.genfromtxt(io.StringIO("what"), dtype=object)
array(None, dtype=object)Originally posted by @eric-wieser in #15534