Advanced Dictionaries: defaultdict in Python

Today we learn about defaultdict and advanced dictionaries in Python.
◾◾◾◾◾◾◾◾◾◾◾◾◾◾◾◾◾
📚 Programming Books & Merch 📚
🐍 The Python Bible Book: www.neuralnine.com/books/
💻 The Algorithm Bible Book: www.neuralnine.com/books/
👕 Programming Merch: www.neuralnine.com/shop
🌐 Social Media & Contact 🌐
📱 Website: www.neuralnine.com/
📷 Instagram: / neuralnine
🐦 Twitter: / neuralnine
🤵 LinkedIn: / neuralnine
📁 GitHub: github.com/NeuralNine
🎙 Discord: / discord

[@Radical9535]

I learned how to use default dictionaries! thanks for these videos again super useful! please don't stop making content!

[@JoseAntonio-jf5lz]

Excellent explanation, thank you very much.

[@blendercharacter5418]

this is so usful for me right now! Im glad that I found this I'll use it tommorrow ! thank you!

[@user-ni1ty8ul4l]

This is my first comment in English on utube. I liked your videos, this and others, they are all very interesting and useful. Thank you very much!

[@jasonchien5359]

Amazing video regarding the usage of defaultdict, learnt a lot and I see the benefits over the default dictionary compare to defaultdict class.
Keep up the good work 👍👍👍

[@SolidBuildersInc]

This was a Game Changer on Dictionaries for me.
I will read the docs....🎉

[@paulthomas1052]

Thanks - very interesting tutorial.

[@kiorde]

Very useful, thanks!

[@turtlecode]

Perfect tutorial!

[@alexanderkaess9505]

Very good explanation

[@Bio-explains]

thanks a lot, this vid is really useful👌

[@user-ky1fv4ul2c]

I just recently run into this defaultdict in my colleague's code, and now you share what it's all about. How's that work?)) Thank you for a great tutorial.

[@kvelez]

from collections import defaultdict
words = ["apple", "banana", "carrot", "avocado", "brocoli"]
grouped_words = {defaultdict(list)}
for word in words:
grouped_words[word[0]].append(word)
print(grouped_words)

[@aflous]

@11:44 you still can have some logic using a callable, no need to inherit from defaultdict

[@kvelez]

from collections import defaultdict
class DefaultDicts(defaultdict):
def __missing__(self, key):
self[key] = value = len(key)
return value
test = DefaultDicts()
print(test["hello"])
print(test["hi"])
print(test)

[@pranee31]

Please make a video on "how to use OrderedDict in defaultdict"." defaultdict(lambda: OrderedDict())" how this works?

[@lxathu]

Thanks.
Being spoiled by awk and perl, I thought about having this a couple of times

[@kvelez]

from collections import defaultdict
my_list = [1,2,3,44,56,6,65]
counter = defaultdict(int)
values = {
0: "person0",
1: "person1",
2: "person2",
3: "person3",
}
for item in my_list:
counter[item] += 1
print(counter)

[@kvelez]

from collections import defaultdict
tuple_list = [("A",10),("B",4),("A",5),("C",7),("B",1)]
grouped_data = defaultdict(list)
for k,v in tuple_list:
grouped_data[k].append(v)
print(grouped_data)
grouped_data = {k:sum(v) for k, v in grouped_data.items()}
print(grouped_data)

[@kvelez]

from collections import defaultdict
lambda_dict = defaultdict(lambda: "hello world")
print(lambda_dict["hello"])

[@julianreichelt1719]

very nice

[@harsharya828]

Please Make Video on Complex Data Type in python.

[@pawelantczak6476]

Is default dict. quicker/better vs standard_dict[new_key]=standard_dict.get(new_key,0)+current_value?

[@tehyonglip9203]

although defaultdict is less general compared to the regular dict, I think it's more useful and more powerful than the regular one. it's a shame how underused this function is.

[@cawkcheck]

niceee

[@ayoife3482]

Is it just me or is the audio volume low? 🤔

[@yomajo]

It is

[@philtoa334]

Thx_.

[@harsharya828]

Amazing Video 🔥🔥🔥

[@maevwat]

damn, bot infestation in the comments

[@tsunningwah3471]

bilibli

[@user-gv7ly1bw3z]

AAA

[@ayoife3482]

Is it just me or is the audio volume low? 🤔

[@moon911x]

volume low i think