changing file name and extension using loop
<p>I need to change the name and extension of a series of files. The names are currently 'tmax.##.txt', but I need it to be 'tmax_##.txt'. Then, I want to change the .txt extension to .asc. I've tried the below code and the first loop works as expected to produce 'tmax_01'. The second loop runs, but produces unexpected results, 't'.</p>

<pre><code>list_raw = 'tmax.01.txt', 'tmax.02.txt', 'tmax.03.txt'

for i in list_raw:
    list_conv = i.replace('.','_')

for i in list_conv:
list_final = i.replace('_txt','.asc')
</code></pre>

<p>Any suggestions?</p>
