擅长:python、mysql、java
<p>使用<a href="https://docs.python.org/3.6/library/ipaddress.html#arithmetic-operators" rel="nofollow noreferrer">^{<cd1>}</a>:</p>
<pre><code>import ipaddress
str(ipaddress.IPv4Address("192.168.1.1") - 1)
</code></pre>
<p>输出:</p>
<pre><code>'192.168.1.0'
</code></pre>