擅长:python、mysql、java
<p>基本for循环:</p>
<pre><code>b = [1,0,1,1]
Matrix = [['a','b','c','d'],['e','f','g','h'],['i','j','k','l'],['m','n','o','p']]
result_matrix = []
for i in range(len(b)):
if b[i] == 1:
result_matrix.append(Matrix[i])
print (result_matrix)
</code></pre>
<p>什么是平等列表理解:</p>
<pre><code>result_matrix = [Matrix[i] for i in range(len(b)) if b[i]]
print (result_matrix)
</code></pre>