printing lines that contain 60 characters
<p>I'm having trouble printing a string in lines chat contains 60 characters.</p>

<p>my code is below:</p>

<pre><code>s = 'abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrtsucwxyz'

for i in range(0, len(s), 60):
    for k in s[i:i+60]:
        print k
</code></pre>
