<p>是否可以替换字符串中多次出现的单个字符?在</p>
<p>输入:</p>
<pre><code>Sentence=("This is an Example. Thxs code is not what I'm having problems with.") #Example input
^
Sentence=("This is an Example. This code is not what I'm having problems with.") #Desired output
</code></pre>
<p>将<code>"Thxs"</code>中的“x”替换为<code>i</code>,而不替换<code>"Example"</code>中的<code>x</code>。在</p>