title: u's in Pandas DataFrame
body: <p>Running the following code in Python 2.7:</p>
  
  <pre><code>import numpy as np
  import pandas as pd
  
  dates = pd.date_range('20190102', periods=6)
  df = pd.DataFrame(np.random.randn(6,4), index=dates, columns=list('ABCD'))
  print df.columns
  </code></pre>
  
  <p>produces this output:</p>
  
  <pre><code>Index([u'A', u'B', u'C', u'D'], dtype='object')
  </code></pre>
  
  <p>From other sources I gather that these are unicode labels. How do I get rid of them?</p>