Counting With Python’s Counter – Real Python

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Python's Counter: The Pythonic Way to Count Objects


Counting several repeated objects at once is a common problem in programming. Python offers a bunch of tools and techniques you can use to approach this problem. However, Python’s Counter from collections provides a clean, efficient, and Pythonic solution.

This dictionary subclass provides efficient counting capabilities out of the box. Understanding Counter and how to use it efficiently is a convenient skill to have as a Python developer.

In this video course, you’ll learn how to:

  • Count several repeated objects at once
  • Create counters with Python’s Counter
  • Retrieve the most common objects in a counter
  • Update object counts
  • Use Counter to facilitate further computations
  • Implement Counter instances as multisets





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