Python Tutorial: Namedtuple - When and why should you use namedtuples?

Named Tuples in Python are High-performance container datatypes. What advantage do namedtuples have over regular tuples and when should you use them? In this video, we'll take a look at namedtuples and why you should use them.

The code from this video can be found at:

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#Python

[fupopanda]

For those experienced with using OOP, here is some helpful information not mentioned in this video:

namedtuple returns a class (that's a child of the built-in class tuple). The first argument you pass to namedtuple becomes the name of the class, while the list of strings becomes the attributes (data fields). You can then call the constructor (the line of code before the print() method in the video) to make objects.

[bartuslongus]

As precise, helpful and enjoyable as always - even after 6.5 years. My favorite Python YT resource. Happy to be a member. Thanks Corey!

[xcxfgpn]

Summary:
Sometimes we need something between a tuple and a dictionary.
Tuples have less typing to do but it is easy to forget what each values stand for. In contrast, Dictionaries are very wordy, while we can assign the keys to what the value represents.


Using named tuple makes the meaning of each value explicit while not being as wordy as Dictionary.


How:
1. from collections import namedtuple
2. set a template of the namedtuple, as below.
*Color = namedtuple('Color', ['red', 'blue', 'green'])*
3. create a named tuple using that template, as below
*red_color = Color(255, 0, 0)*


4. now a namedtuple is created. We can use indexing to access each value, but can also add '.red', '.blue', or '.green' at the end of the name of tuple, to access each value, too.
*print(red_color.red)*
*print(red_color[0])*


both will print out 255 in the console.

[vikramsarabhai]

This was worth every second of my time.
Thank You So Much.

[jokerMCify]

I am liking all your Python videos. Well done and I am not exaggerating. (takes his hat off and applause)

[shaunsawyer]

Should also note printing named tuples gives you a very clear representation of what they are and what they contain. For instance,
>> Position = namedtuple('Coordinate', ['x', 'y'])
>> p1 = Position(1, 3)
>> print p1
Coordinate(x=1, y=3)

[alixaprodev]

this is a very small tip but sometimes it is very important to know these small tips. thanks for being with us dear @Cory Schafer.

[onuberonly]

its like a c/c++ struct I love it now I have a way to use a struct like object in python...Powerful!

[MehmetMustafaICER]

Thank you Corey. Great video, very useful.

[mbasith]

This was very helpful for me. Thanks for posting!!!

[vaibhavkrkm]

Love your channel!!! Please keep it up :)

[julia_orchid_cali]

Very good explanation and easy to follow. Thank you.

[slonbeskonechen]

it seems its what I looking for :) Thank you!

[wangleimail]

you can also add a built-in function in to namedtuple filed. For example
# define a namedtuple with func
Colorf = namedtuple('Colorf', 'r g b fun')
clrf_ntpl = Colorf(1, 2, 3, sum)
print("namedtuple clrf_ntpl.fun([1, 10]): ", clrf_ntpl.fun([1, 10]))

[snpsforyomom]

never even heard of these, but they look pretty cool. thanks!

[RanjeetkumarYadav]

Color = namedtuple("Color", ["x", "y", "z"])
What's the difference between variable Color and argument "Color"?
I found "Color" argument can be anything and namedtuple still works fine. So what's the purpose of this argument?

[fahadmdkamal]

Maaan... you are more easy than the documentation.

[waseksamin]

for python 3, you have to do:
from collections import namedtuple

[DilipKumar-iccg]

what is the significance of the text 'Color' within namedtuple('Color', [...]), should this be same as the variable Color. If its not the same, what are the consequences.
Thanks

[arcsaber]

If I want to add another attribute to the tuple, such as 'purple' do I need to create a new tuple/