Intermediate Python Tutorial #3 - Map() Function

Welcome to a new series! Intermediate Python Tutorials!

Today's Topic: map() function, this function takes two arguments: a function and a list. It then applies the function to all of the values of the list of and creates a new values with the returned values from thew function.

In this set of videos I will be explaining more advanced programming concepts and showing you intermediate-advanced tools that you can use in python. A lot of these tools will help you to solve problems/code more efficiently and will save you a ton of time!

Future topics:
4. Filter Function
5. Lambda Functions
6. Intro to Collections
7. Collections: named tuple
8. Collections: deque
9. Collections: orderedDict
10. Collections: defualtDict
11. docstrings

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[Haluna]

awesome, finally someone who can explain quickly and easily

[konstantinosmaravegias]

thnx you, , , i was looking for something like this since the majority of videos are focucing in teaching the basics.

[bryanttayou]

The map() explanation with the if statement is just so useful. Thx man

[shiraku]

I required this for competitive programming

[tomershechner]

Great video and explanation! it's really sad for me that your channel is so small. your content is good and the upload rate is high!

[adrianmh]

Also the map function is magnitudes faster than the for loop. probably the more important reason to be using it instead of a loop

[bepispoggoloco]

No one needs to tell you how good your channel is. The amount of dislikes you got on this video already shows everyone likes you. Good job buddy.

[QuantumVortex]

if you want for exampe to grab the element that are a string from an array I think it is better to use the filter function
because it returns the array with the elements that are a string BUT with the map function it returns an array with true and false only

[Shahzaibik]

Your Channel is Great!
Good explanations skills!
You deserve an audience.
Have you optimized your content for youtube search?

[Skaxarrat]

Which one runs faster? List comprehension or map function?

[charly]

Great short explanation. One thing, when you say map takes in two parameters, function and a list, do you mean only a list and not any other iterables such as tuples, sets, generators, etc. ?

[freedempire]

seems that using list comprehensions will be simpler if u want to get a list

[joeywen]

Question: Shadows name 'x' from outer scope

[urjitchakraborty]

li = [x**x for x in range(1, 11)]
print(li) also works

[tedesca]

hey! thank you for the videos!!! I am also going through corresponding notes on your site and have a question. " numList.append(f1(nums))" should't it be " newList.append(f1(item))" otherwise it doesn't work

[wongkingshun]

print(list(map(func.li)))

Does it means new list = the expression of the func2

[domillima]

It seems that the map function can't be used on numpy arrays, right?

[ezraakran]

How did 3 become 27 when it was applied to the function? 2:52

[eshwar]

i have a doubt when i use list word in map function in jupyter notebook output is coming that list is not capable. is there any reason for it?

[Sciencedoneright]

So you mean every single thing is possible in python?