title: Python error - only integers, slices (`:`), ellipsis (`...`), numpy.newaxis (`None`) and integer or boolean arrays are valid indices
body: <p>I'm trying to implement SVM in python, but I can't figure out the error in this line: <code>if i == y[i] :</code></p>
  
  <pre><code>dataset = genfromtxt('E:\cleveland.csv',dtype= float,delimiter=',')
  #print dataset
  X = dataset[:,0:12] #labels
  y = dataset[:,13]  #target
  
  #replace 1 to 4 by 1 label
  for index,item in enumerate(y):
      if not(item==0.0):
          print(y)
  target_names = ['0', '1']
  
  modelSVM = LinearSVC(C=0.1)
  pca = PCA(n_components=2, whiten=True).fit(X)
  X_new = pca.transform(X)
  
  #calling plot_2D
  plot_2D(X_new,y,target_names)
  
  #Applying cross validation on the training and test set for validating our Linear SVM model
  X_train, X_test, y_train, y_test=cross_validation.train_test_split(X_new,y,test_size=0.2,train_size=0.8,random_state=0) 
  modelSVM = modelSVM.fit(X_train,y_train)
  print ("Linear SVC values with split")
  print (modelSVM.score(X_test,y_test))
  modelSVMRaw = LinearSVC(C=0.1)
  modelSVMRaw = modelSVMRaw.fit(X_new,y)
  cnt=0
  for i in modelSVMRaw.predict(X_new):
      if i == y[i]:
          cnt=cnt+1
  </code></pre>
  
  <p>What is the slicing error there? Or any error for that matter</p>