擅长:python、mysql、java
<p>请尝试下面的代码</p>
<pre class="lang-py prettyprint-override"><code>with open("out_put.txt","r") as f:
line=f.readline()
while(line):
if line.strip().startswith("address-family"):
line2=f.readline()
if line2 and line2.strip().startswith("neighbor"):
print(line,end='')
print(line2,end='')
line=line2
else:
line=f.readline()
</code></pre>