Python deleting lines with characters
<p>I am new to Python. I am looking for the best way to delete all lines from a file that contains characters.</p>

<p>For example, from below, only User1, User2, User3 and User 4 would exist after processing. Notice User 4 has a space.</p>

<pre><code>5!pY
"TmL
c]+y?"
|)}?E
\e2g%
User1
User2
User3
User 4
11-01-05
[GO-B
</code></pre>

<p>If anyone could point me in the right direction I'd greatly appreciate it.</p>

<p>Thanks </p>
