title: Restoring the default display context in Pandas
body: <p>I have found myself in cases where I accidentally run:</p>
  
  <pre><code>pd.option_context('display.max_columns', None, 
                    'display.max_rows', None, 
                    'display.width', None, 
                    'display.max_colwidth', 0)
  </code></pre>
  
  <p><strong>without</strong> the <code>with</code> clause. Unfortunately, that changes my default printing options for all my <code>print</code> statements.</p>
  
  <p>My question is: How can I restore the default <code>context</code>?</p>
  
  <p>Calling <code>pd.option_context()</code> without arguments doesn't work, I get:</p>
  
  <pre><code>ValueError: Need to invoke asoption_context(pat, val, [(pat, val), ...)).
  </code></pre>