title: How many values can hashlib.sha256(hashlib.sha256(str(x).encode()).digest()).hexdigest() have?
body: <p>I am aware that for any <code>x</code>, 
  <code>int(hashlib.sha256(str(x).encode()).hexdigest(), 16)</code> has 2**256 possible values. 
  How many possible values does the following have then?</p>
  
  <pre><code>int(hashlib.sha256(hashlib.sha256(str().encode()).digest()).hexdigest(), 16)
  </code></pre>
  
  <p>I assume it has 2**256 possible values as it is a SHA-256 hash anyway.</p>