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Advanced Dictionaries: defaultdict in Python

2023-05-24 Science & Technology
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NeuralNine
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Description

Today we learn about defaultdict and advanced dictionaries in Python. ◾◾◾◾◾◾◾◾◾◾◾◾◾◾◾◾◾ 📚 Programming Books & Merch 📚 🐍 The Python Bible Book: https://www.neuralnine.com/books/ 💻 The Algorithm Bible Book: https://www.neuralnine.com/books/ 👕 Programming Merch: https://www.neuralnine.com/shop 🌐 Social Media & Contact 🌐 📱 Website: https://www.neuralnine.com/ 📷 Instagram: https://www.instagram.com/neuralnine 🐦 Twitter: https://twitter.com/neuralnine 🤵 LinkedIn: https://www.linkedin.com/company/neuralnine/ 📁 GitHub: https://github.com/NeuralNine 🎙 Discord: https://discord.gg/JU4xr8U3dm

Top Comments (10)

@Revamped1953 2023-07-27

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

6
@JoseAntonio-jf5lz 2023-05-24

Excellent explanation, thank you very much.

1
@Saikartik-s6e 2026-06-11

For the tuple list group and sum problem, you could have done this to save a few lines of code: tuple_list = [("A", 10), ("B", 4), ("A", 5), ("C", 7), ("B", 1)] grouped_dict = defaultdict(int) for char, val in tuple_list: grouped_dict[char]+=val print(grouped_dict)

1
@SolidBuildersInc 2023-05-24

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

0
@brainacademylearnpython 2023-11-14

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

0
@AI_pomoguy 2023-11-15

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!

0
@jasonchien5359 2024-05-19

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 👍👍👍

0
@paulthomas1052 2023-05-26

Thanks - very interesting tutorial.

0
@Alchemist10241 2025-07-30

I couldn’t understand why we even need default dictionaries from your first examples, but the last two really showed how useful they are.

0
@Skrattoune 2025-03-07

Learned something about interesting a logic into the default value. Thanks

0

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