title: sklearn dumping model using joblib, dumps multiple files. Which one is the correct model?
body: <p>I did a sample program to train a SVM using sklearn. Here is the code</p>
  
  <pre><code>from sklearn import svm
  from sklearn import datasets
  from sklearn.externals import joblib
  
  clf = svm.SVC()
  iris = datasets.load_iris()
  X, y = iris.data, iris.target
  clf.fit(X, y)
  
  print(clf.predict(X))
  joblib.dump(clf, 'clf.pkl') 
  </code></pre>
  
  <p>When I dump the model file I get this amount of files. :</p>
  
  <p><em>['clf.pkl', 'clf.pkl_01.npy', 'clf.pkl_02.npy', 'clf.pkl_03.npy', 'clf.pkl_04.npy', 'clf.pkl_05.npy', 'clf.pkl_06.npy', 'clf.pkl_07.npy', 'clf.pkl_08.npy', 'clf.pkl_09.npy', 'clf.pkl_10.npy', 'clf.pkl_11.npy']</em></p>
  
  <p>I am confused if I did something wrong. Or is this normal? What is *.npy files. And why there are 11?</p>