擅长:python、mysql、java
<p>这是<a href="http://docs.scipy.org/doc/scipy/reference/generated/scipy.sparse.bmat.html#scipy.sparse.bmat" rel="nofollow">^{<cd1>}</a>:</p>
<pre><code>L = scipy.sparse.bmat([Lx, Ly, Lz], format='csc')
LT = scipy.sparse.bmat(zip(Lx, Ly, Lz), format='csr') # Not equivalent to L.T
product = LT * L
</code></pre>