DataFrame constructor raises exception with masked recarray (original) (raw)

The DataFrame constructor supports numpy's ndarray of primitive type, recarray (or structured array) or a masked array of simple type. It breaks when given a masked recarray:

a = np.ma.mrecords.fromrecords([(1,2)], names=['a', 'b'], mask=False) pandas.DataFrame(a) ... TypeError: cannot perform reduce with flexible type

Tested at latest public release and HEAD.