Merge pull request bradtraversy#9 from saksham715/patch-1

bradtraversy · web-flow · commit b9fe42693f7c · 2020-10-19T09:37:07.000-04:00
made a new file Create map, filter and reduce.py
diff --git a/python_sandbox_finished/map, filter and reduce.py b/python_sandbox_finished/map, filter and reduce.py
@@ -0,0 +1,23 @@
+
+from setuptools import reduce #importing reduce module for using reduce function
+
+l1 = [2,3,4,5,6]
+
+mapping_the_l1 = list(map(lambda x: x*2, l1)) # MAP FUNCTION APPLIES THE GIVEN COMMAND TO EVERY INDEX OF A LIST
+# IN THIS CASE WE ARE MULTIPLYING EVERY CHARACTER IF LIST l1 TO 2 USING LAMBDA FUNCTION
+
+print(mapping_the_l1)
+
+
+filtering_the_l1 = list(filter(lambda x: x%2 ==0)) #FILTER FUNCTION FILTERS THE LIST ACCORDING TO OUR WISH
+# IN THIS CASE WE ARE FILERING THE NUMBER WHICH IS DIVISIBLE BY 2 IN l1.
+
+print(filtering_the_l1)
+
+def add(x, y):
+   return x+y
+   
+reducing_the_l1 = reduce(add, l1) # REDUCE FUNCTION IS USED FOR DOING MATHEMATICAL OPERATIONS IN A LIST
+# HERE, WE ARE ADDING ALL THE CHARACTERS THE LIST l1 
+
+print(reducing_the_l1)
