擅长:python、mysql、java
<p>它被称为原始字符串文字。</p>
<p>根据<a href="http://docs.python.org/2/reference/lexical_analysis.html#string-literals" rel="nofollow">^{<cd1>}</a>:</p>
<blockquote>
<p>The backslash (\) character is used to escape characters that
otherwise have a special meaning, such as newline, backslash itself,
or the quote character. String literals may optionally be prefixed
with a letter 'r' or 'R'; such strings are called raw strings and use
different rules for interpreting backslash escape sequences.</p>
<p>...</p>
<p>Unless an 'r' or 'R' prefix is present, escape sequences in strings
are interpreted according to rules similar to those used by Standard C</p>
</blockquote>