擅长:python、mysql、java
<p>如果要替换所有<code>None's</code>:</p>
<pre><code>with open(filename) as f:
lines = f.read().replace("None","")
with open(filename,"w") as f1:
f1.write(lines)
</code></pre>
<p>将<code>rstrip</code>与<code>fileinput</code>一起使用也可以:</p>
^{pr2}$