擅长:python、mysql、java
<p><strong>像这样使用<a href="http://docs.python.org/library/functions.html#enumerate" rel="noreferrer">^{<cd1>}</a>:</strong></p>
<pre><code>def draw_menu(options, selected_index):
for counter, option in enumerate(options):
if counter == selected_index:
print " [*] %s" % option
else:
print " [ ] %s" % option
options = ['Option 0', 'Option 1', 'Option 2', 'Option 3']
draw_menu(options, 2)
</code></pre>
<p><strong>注意</strong>:如果需要,您可以选择在<code>counter, option</code>周围放置括号,例如<code>(counter, option)</code>,但它们是无关的,通常不包括在内。</p>