from functools import reduce in count_occurences.py

test/count_occurences/count_occurences.py

@@ -1,4 +1,7 @@
+from functools import reduce
+
+
 def count_occurences(arr, val):
     return reduce(
         (lambda x, y: x + 1 if y == val and type(y) == type(val) else x + 0),
-        arr)
+        arr)