title: Python how to create a new column that measures proximity to a city?
body: <p>I have a dataframe with Latitude and Longitude columns,</p>
  <pre><code>df = pd.DataFrame({'Latitude':[47.5112, 47.7210, 47.7379, 47.5208, 47.6168],
                      'Longitude':[-122.257, -122.319, -122.233, -122.393, -122.045]})
  </code></pre>
  <p>How do I create a column that measures the distance towards a particular location with coordinates (47.631872, -122.217109)</p>
  <p>In particular I'd like to use the <code>geodesic</code> function from <code>geopy</code> for the distance: <code>from geopy.distance import geodesic</code>. It takes in the inputs of 2 tuples containing latitudes and longitudes, and outputs the distance.</p>