numpy.mat

numpy.mat(data, dtype=None)

Interpret the input as a matrix.

Unlike matrix, asmatrix does not make a copy if the input is already a matrix or an ndarray. Equivalent to matrix(data, copy=False).

Parameters:	data : array_like Input data. dtype : data-type Data-type of the output matrix.
Returns:	mat : matrix data interpreted as a matrix.

[Python] numpy.mat

原文：http://www.cnblogs.com/KennyRom/p/6607765.html