擅长:python、mysql、java
<pre><code>lst = ["johndoe@example.com", "doejohn@email.com", "maryjane@domain.com"]
out = [i.split("@")[0] + "@changed.com" if "@" in i else i for i in lst]
print(out)
</code></pre>
<p>印刷品:</p>
<pre><code>['johndoe@changed.com', 'doejohn@changed.com', 'maryjane@changed.com']
</code></pre>
<hr/>
<p>注意:对于更高级的用例,我建议查看<a href="https://docs.python.org/3/library/re.html" rel="nofollow noreferrer">^{<cd1>}</a>模块</p>