擅长:python、mysql、java
<p>这应该起作用:</p>
<pre class="lang-py prettyprint-override"><code>stirng1 = "cool"
list1 = list(string1)
list1[1] = "u"
print("".join(list1))
</code></pre>
<p>执行时:</p>
<pre class="lang-py prettyprint-override"><code>>>>cuol
</code></pre>