What information exactly is `isnan` supposed to communicate? Put another way, given that it raises NotImplemented for unknown types, and that bool(NotImplemented) is True, is there a reason by it cannot return a Python bool (which seems more useful)? Thanks, Alan Isaac
> >> np.isnan(np.nan) True > >> np.isnan(np.nan) is True False > >> type(np.isnan(np.nan)) <type 'numpy.bool_'> > >> np.isnan('') NotImplemented > >> bool(_) True > >> if np.isnan(''): print "Uh oh" ... Uh oh _______________________________________________ NumPy-Discussion mailing list NumPy-Discussion@scipy.org http://mail.scipy.org/mailman/listinfo/numpy-discussion