擅长:python、mysql、java
<p>试试这个:</p>
<pre><code>a=[(1,'Rach', 'Mell', '5.11', '160'),(2, 'steve', 'Rob', '6.1', '200'), (1,'Rach', 'Mell', '5.11', '160')]
a_list = []
for ele in a:
a_list.append(list(ele))
for ele in a_list:
if ele[0] == 2:
ele[2] = "Roberto"
print a_list
</code></pre>