title: How to use cross_val_score with high order linear regression?
body: <p>I know that we can do cross validation in simple linear regression as</p>
  
  <pre><code>lnrreg = LinearRegression()
  scores = cross_val_score(lnrreg, X, Y, cv=4, scoring='neg_mean_squared_error')
  </code></pre>
  
  <p>But how do we do <code>cross_val_score()</code> on linear regression of higher order?</p>