擅长:python、mysql、java
<p>来自<a href="http://www.python.org/dev/peps/pep-0289/#id12" rel="nofollow noreferrer">PEP 289</a>:</p>
<blockquote>
<p>After exploring many possibilities, a
consensus emerged that binding issues
were hard to understand and that users
should be strongly encouraged to use
generator expressions inside functions
that consume their arguments
immediately. For more complex
applications, full generator
definitions are always superior in
terms of being obvious about scope,
lifetime, and binding [6].</p>
<p>[6] (1, 2) Patch discussion and alternative patches on Source Forge <a href="http://www.python.org/sf/872326" rel="nofollow noreferrer">http://www.python.org/sf/872326</a></p>
</blockquote>
<p>这就是生成器表达式的作用域是如何确定的。在</p>