Python8 code examples
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Dictionaries
1
Dictionary Basics
Dictionaries store key-value pairs. Keys must be immutable (strings, numbers, tuples). Values can be any type. Python 3.7+ maintains insertion order.
2
Dictionary Comprehensions
Create dictionaries concisely using comprehensions with filtering and transformations.
3
DefaultDict and Counter
Specialized dictionary types from collections module for common use cases.
4
OrderedDict and ChainMap
OrderedDict maintains order (pre-Python 3.7). ChainMap combines multiple dictionaries.
5
Dictionary Views and Advanced Methods
View objects provide dynamic views of dictionary entries.
6
Working with Nested Dictionaries
Accessing and manipulating nested dictionary structures.
7
Advanced Dictionary Techniques
Hash table internals, performance considerations, and advanced patterns.
8
Dictionary Type Hints and Best Practices
Modern Python typing for dictionaries and best practices.
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