title: how to give multiple inputs to the training model in sklearn library?
body: <pre><code>X_train,X_test,Y_train,Y_test = train_test_split(T,Yout,test_size = 0.20)
  clf.fit(X_train,Y_train)
  </code></pre>
  
  <p>I need to train the model using 3 arguments ie,<code>clf.fit(X_train,X_train[3], Y_train)</code>.but it shows error fit (X.shape[0], y.shape[0])). Want to make training as dependent on X_train[3].
  Suggest if there are any other commands in python for training(ie apart from fit and train_test_split).</p>