Скачать или смотреть Python Collections Library defaultdict - Intermediate Python Tutorial

Learn how to use the Python Collections defaultdict to make creating dictionaries easier! The collections module provides useful functions and classes to make working with data collections easier and more intuitive.

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0:00 Introductions and what you’ll learn
0:45 Python Collections defaultdict Overview
2:30 Working with Regular Python Dictionaries
5:05 Using Python Collections defaultdict To Handle Missing Keys
7:58 Grouping Items with Python defaultdict
11:20 Aggregating Data with Python defaultdict
13:00 Conclusion
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