title: Split string by count of characters
body: <p>I can't figure out how to do this with string methods:</p>
  
  <p>In my file I have something like 1.012345e0070.123414e-004-0.1234567891.21423... which means there is no delimiter between the numbers. </p>
  
  <p>Now if I read a line from this file I get a string like above which I want to split after e.g. 12 characters. 
  There is no way to do this with something  like <code>str.split()</code> or any other string method as far as I've seen but maybe I'm overlooking something?</p>
  
  <p>Thx</p>