Python
Python Dictionaries: Keys, Values and Lookup
A dictionary maps keys to values and finds any value in roughly constant time. It is the most used container in Python and the structure most real dat...
Dictionaries
Key to value mapping, dictionary methods, iteration, nesting and practical patterns.
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Python
Dictionary Methods and Counting Patterns
setdefault, get with a default and the Counter class turn the most common dictionary jobs - counting, grouping and accumulating - into two or three li...
Python
Nested Dictionaries and Real Data Structures
Real data arrives as dictionaries inside dictionaries inside lists. Reaching into it safely, walking it and flattening it are skills worth practising...