擅长:python、mysql、java
<pre><code>from collections import OrderedDict
order_dict = OrderedDict()
order_dict[4] = "Hello"
order_dict[3] = "World"
order_dict[5] = "Bah"
print order_dict
</code></pre>
<p>输出:</p>
^{pr2}$
<p>打印键和值:</p>
<pre><code>for key, value in order_dict.iteritems() :
print key, value
</code></pre>
<p>输出:</p>
<pre><code>4 Hello
3 World
5 Bah
</code></pre>