Update boruta_py.py

solving issue scikit-learn-contrib#30 in _assign_hits

Author: Saravji

boruta/boruta_py.py

@@ -415,7 +415,8 @@ def _add_shadows_get_imps(self, X, y, dec_reg):
 
     def _assign_hits(self, hit_reg, cur_imp, imp_sha_max):
         # register hits for features that did better than the best of shadows
-        cur_imp_no_nan = [val for val in cur_imp[0] if not np.isnan(val)]
+        cur_imp_no_nan = cur_imp[0]
+        cur_imp_no_nan[np.isnan(cur_imp_no_nan)]=0
         hits = np.where(cur_imp_no_nan > imp_sha_max)[0]
         hit_reg[hits] += 1
         return hit_reg