title: Python variables naming convention
body: <p>So I am trying to switch to PEP8 notation (from a rather personal CamelCase notation) and I was wondering how you guys are tackling the cases where existing functions/variables would be overwritten?</p>
  
  <p>e.g. having something like:</p>
  
  <pre><code>open, high, low, close, sum = row
  </code></pre>
  
  <p>would already overwrite the "open" and "sum" functions. 
  First, if I wouldn't use a good IDE, I wouldn't even notice that I've just overwritten important basic functions. Second, how would you name the variables instead?
  In this example I would have used apps hungarian and wouldn't have encountered any potential problem at all.</p>
  
  <p>Thanks!</p>