Python Fundamentals and Map()

• Thu, Oct 13, 2022
• One-minute read

I have been going back over some of the fundamentals of python data types and also trying to learn more advanced algorithms. Today I focused on the map() function. Map takes in 2 arguments like this map(function, iterables). So I could write a function like this:

def multiplyByTwo(item):
    
    return item*2

And then print the answer out like this:

print(list(map(multiplyByTwo, [2, 4, 6])))

which returns:

[4, 8, 12]

This is a very basic example. I hope you can see how powerful this function could be. Ever for this example, because otherwise my function would look something close to this:

def multiplyByTwo(li):
    new_list = []
    for item in li:
        new_list.append(item*2)
    return new_list

Happy Coding!