title: Find how many out-of-bag records were there in a Random forest model
body: <p>My oob_score is 0.97 and the accuracy on test data is 0.97.
  Is there a way to know how many samples is being used to calculate oob_score ?</p>
  <p>This may give some more confidence on results.</p>
  <pre><code>rf.oob_score_ # for oob score
  
  rf.score(X_test_scaled,y_test) # for accuracy on test data 
  </code></pre>