fix float

Author: Davies Liu

python/pyspark/mllib/stat.py

@@ -220,11 +220,11 @@ def chiSqTest(observed, expected=None):
         >>> from pyspark.mllib.linalg import Vectors, Matrices
         >>> observed = Vectors.dense([4, 6, 5])
         >>> pearson = Statistics.chiSqTest(observed)
-        >>> pearson.statistic
+        >>> print pearson.statistic
         0.4
         >>> pearson.degreesOfFreedom
         2
-        >>> round(pearson.pValue, 4)
+        >>> print round(pearson.pValue, 4)
         0.8187
         >>> pearson.method
         u'pearson'
@@ -234,13 +234,13 @@ def chiSqTest(observed, expected=None):
         >>> observed = Vectors.dense([21, 38, 43, 80])
         >>> expected = Vectors.dense([3, 5, 7, 20])
         >>> pearson = Statistics.chiSqTest(observed, expected)
-        >>> round(pearson.pValue, 4)
+        >>> print round(pearson.pValue, 4)
         0.0027
 
         >>> data = [40.0, 24.0, 29.0, 56.0, 32.0, 42.0, 31.0, 10.0, 0.0, 30.0, 15.0, 12.0]
         >>> chi = Statistics.chiSqTest(Matrices.dense(3, 4, data))
-        >>> round(chi.statistic)
-        22.0
+        >>> print round(chi.statistic, 4)
+        21.9958
 
         >>> from pyspark.mllib.regression import LabeledPoint
         >>> data = [LabeledPoint(0.0, Vectors.dense([0.5, 10.0])),
@@ -251,9 +251,9 @@ def chiSqTest(observed, expected=None):
         ...         LabeledPoint(1.0, Vectors.dense([3.5, 40.0])),]
         >>> rdd = sc.parallelize(data, 4)
         >>> chi = Statistics.chiSqTest(rdd)
-        >>> chi[0].statistic
+        >>> print chi[0].statistic
         0.75
-        >>> chi[1].statistic
+        >>> print chi[1].statistic
         1.5
         """
         if isinstance(observed, RDD):