Split an array of strings into a 2d array of characters
<p>I am trying to split an array of strings into a 2d array of characters from each string</p>

<pre><code>lines = ['abc','123','ggg']
list(lines)
print lines
#['abc','123','ggg']
#nothing changed
#I want [['a','b','c'],['1','2','3'] etc..
</code></pre>

<p>Whereas with one string,</p>

<pre><code>print list('lala')
#['l', 'a', 'l', 'a']
#It works!
</code></pre>

<p>Thanks</p>
