擅长:python、mysql、java
<pre><code>a = ['a', '12asf3', 'sdf']
b = ['gfdg5', ' ', 'vag gfd4']
c = [' fd4 ', 'sfsa fa', 'df4 a']
abc = [a, b, c]
for mem in abc:
counter = 0
for str in mem:
if 'a' in str:
counter += 1
print abc.index(mem), mem, counter
</code></pre>
<p>输出:</p>
<pre><code>0 ['a', '12asf3', 'sdf'] 2
1 ['gfdg5', ' ', 'vag gfd4'] 1
2 [' fd4 ', 'sfsa fa', 'df4 a'] 2
</code></pre>