title: Split string into two parts only
body: <p>I have a string </p>
  
  <pre><code>s = 'abcd qwrre qwedsasd zxcwsacds'
  </code></pre>
  
  <p>I want to split any string in only two parts at the first occurrence of a whitespace. <em>i.e</em>. <code>a='abcd'</code> and <code>b='qwrre qwedsasd zxcwsacds'</code></p>
  
  <p>If I use <code>a, b=split(' ')</code> it gives me an error because there are too many values to unpack.</p>