title: Unhashable type error in pandas dataframe
body: <p>I have the following pandas dataframe:</p>
  <pre><code>df.shape
  
  (86, 245)
  </code></pre>
  <p>However, when I do this:</p>
  <pre><code>df[0, :]
  </code></pre>
  <p>I get the error:</p>
  <pre><code>*** TypeError: unhashable type
  </code></pre>
  <p>How do I fix this? I just want to get the first row</p>