<p>这段代码来自<a href="http://docs.python.org/2/tutorial/errors.html#predefined-clean-up-actions" rel="noreferrer">http://docs.python.org/2/tutorial/errors.html#predefined-clean-up-actions</a></p>
<pre><code>with open("myfile.txt") as f:
for line in f:
print line,
</code></pre>
<p>我不明白的是,print命令末尾的<code>,</code>是什么。</p>
<p>我还查了医生,<a href="http://docs.python.org/2/library/functions.html#print" rel="noreferrer">http://docs.python.org/2/library/functions.html#print</a>。</p>
<p>不够理解,是不是错了?(似乎不是。它来自官方教程)。</p>
<p>我来自ruby/javascript,这对我来说很不寻常。</p>