add filter reduce py

Author: qqracha

notes/filter_reduce.py

@@ -0,0 +1,6 @@
+from functools import reduce
+
+numbers = [5,1,7,4,2,6,3,8]
+
+print(list(filter(lambda x: x % 2 == 0, numbers)))
+print(reduce(lambda x, y: x * y, numbers))