Python Counter class in 3 seconds

Writing concise code is important during coding interviews.
Not only it improves the readability of the code, but it also saves you time and makes less room for errors.
The Counter class is a great tool that you should know and apply whenever you can.
It allows you to count elements in iterables (elements have to be hashable, tho).
It comes with handy methods like "most_common" or "subtract".
Best,
Albert

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