matrix.compress(condition, axis=None, out=None) Return selected slices of this array along given axis. Refer to

MaskedArray.astype(newtype)

matrix.H Returns the (complex) conjugate transpose of self. Equivalent to np.transpose(self)

dtype.itemsize The element size of this data-type object. For 18 of the 21 types this number is fixed by the data-type

MaskedArray.__imod__ x.__imod__(y) <==> x%=y

ndarray.itemset(*args) Insert scalar into an array (scalar is cast to array?s dtype, if possible) There must be

MaskedArray.__oct__() <==> oct(x)

matrix.any(axis=None, out=None)

ndarray.squeeze(axis=None) Remove single-dimensional entries from the shape of a. Refer to

ndarray.__getitem__ x.__getitem__(y) <==> x[y]