Map applies a function to all the items of an iterable object (lists, Generators, etc). Here is the blueprint:
map(function_to_apply, list_of_inputs)For example, if we want to multiply all the items in a list by 2, we can do it like this:
my_list = [1, 2, 3, 4, 5]
result = map(lambda x: x * 2, my_list)
print(list(result)) # [2, 4, 6, 8, 10]NOTE 1:
map()returns an iterator, so we need to convert it to a list to see the result.
We can also pass multiple iterable objects to map():
my_list1 = [1, 2, 3, 4, 5]
my_list2 = [6, 7, 8, 9, 10]
result = map(lambda x, y: x + y, my_list1, my_list2)
print(list(result)) # [7, 9, 11, 13, 15]