Slicing a string repeatedly
<p>Repeated slicing works on tuples and lists just fine:</p>

<pre><code>&gt;&gt;&gt; tuple = ("nav", "yad")
&gt;&gt;&gt; tuple[0]
'nav'
&gt;&gt;&gt; tuple[0][0]
'n'
</code></pre>

<p>But with strings: </p>

<pre><code>&gt;&gt;&gt; name="university"
&gt;&gt;&gt; name[0]
'u'
</code></pre>

<p>The weird thing here is, when I try repeated slicing over string name variable,
there is nothing at <code>name[0][0]</code> or <code>name[0][-1]</code>, so why does it show <code>"u"</code>?</p>

<pre><code>&gt;&gt;&gt; name[0][0]
'u'
&gt;&gt;&gt; name[0][-1]
'u'
</code></pre>

<p>And if something is at <code>name[0][0]</code> then why not on other indexes?</p>

<pre><code>&gt;&gt;&gt; name[0][1]
Traceback (most recent call last):
  File "&lt;stdin&gt;", line 1, in &lt;module&gt;
IndexError: string index out of range
</code></pre>
