<p>执行以下代码，运行结果( )<br/> def split(s):<br/> return s.split("a")<br/> s = "Happy birthday to you!"<br/> print(split(s))</p>
<p> ['H', 'ppy birthd', 'y to you!']</p>
<p> "Happy birthday to you!"</p>
<p> 运行出错</p>
<p> ['Happy', 'birthday', 'to', 'you!']</p>
