matrixutils.py 文件源码

def to_numpy(m, **options):
    """Convert a sympy/scipy.sparse matrix to a numpy matrix."""
    dtype = options.get('dtype', 'complex')
    if isinstance(m, (Matrix, Expr)):
        return sympy_to_numpy(m, dtype=dtype)
    elif isinstance(m, numpy_ndarray):
        return m
    elif isinstance(m, scipy_sparse_matrix):
        return m.todense()
    raise TypeError('Expected sympy/numpy/scipy.sparse matrix, got: %r' % m)