擅长:python、mysql、java
<p>使用<a href="http://docs.python.org/2/library/stdtypes#str.format" rel="nofollow">^{<cd1>}</a>:</p>
<pre><code>>>> ip_address = '142.55.33.1'
>>> ['{:08b}'.format(int(n)) for n in ip_address.split('.')]
['10001110', '00110111', '00100001', '00000001']
>>> ' '.join('{:08b}'.format(int(n)) for n in ip_address.split('.'))
'10001110 00110111 00100001 00000001'
</code></pre>