python：ImportError: cannot import name 'bincount'

[XuXING0430]

I am just a new machine learning learner.Theses days I want to build a classifier.Today I meet a problem.
I use spyder wirte some code from the lesson just like this:
`from sklearn import datasets
iris = datasets.load_iris()

X = iris.data
y = iris.target

from sklearn.cross_validation import train_test_split
X_train,X_test,y_train,y_test = train_test_split(X,y,test_size = .5)

from sklearn import tree
my_classifiter = tree.DecisionTreeClassifier()

my_classifiter.fit(X_train,y_train)

predictions = my_classifiter.predict(X_test)
print(predictions)`

But when I debug it,shows like this,can you help me?Thanks a lot.
`runfile('C:/Users/Administrator/pipeline.py', wdir='C:/Users/Administrator')
Traceback (most recent call last):

File "", line 1, in
runfile('C:/Users/Administrator/pipeline.py', wdir='C:/Users/Administrator')

File "C:\Users\Administrator\Anaconda3\lib\site-packages\spyder\utils\site\sitecustomize.py", line 880, in runfile
execfile(filename, namespace)

File "C:\Users\Administrator\Anaconda3\lib\site-packages\spyder\utils\site\sitecustomize.py", line 102, in execfile
exec(compile(f.read(), filename, 'exec'), namespace)

File "C:/Users/Administrator/pipeline.py", line 14, in
from sklearn.cross_validation import train_test_split

File "C:\Users\Administrator\Anaconda3\lib\site-packages\sklearn\cross_validation.py", line 35, in
from .utils.fixes import bincount

ImportError: cannot import name 'bincount'`