Merge pull request #30 from rolisz/patch-2

Remove itemfreq

Author: lopuhin

eli5/lime/samplers.py

@@ -6,7 +6,6 @@
 import six
 
 import numpy as np
-from scipy.stats import itemfreq
 from sklearn.base import BaseEstimator, clone
 from sklearn.neighbors import KernelDensity
 from sklearn.metrics import pairwise_distances
@@ -188,7 +187,7 @@ def _sampler_n_samples(self, n_samples):
                                            p=self.weights)
         return [
             (self.samplers[idx], freq)
-            for idx, freq in itemfreq(sampler_indices)
+            for idx, freq in zip(*np.unique(sampler_indices, return_counts=True))
         ]