擅长:python、mysql、java
<blockquote>
<p>What format is in the second line?</p>
</blockquote>
<p>它是一个<a href="http://en.wikipedia.org/wiki/String_literal" rel="nofollow">string literal</a>。参见<a href="https://docs.python.org/2/reference/lexical_analysis.html#literals" rel="nofollow">documentation</a></p>