Python 3.15 introduces an immutable or ‘frozen’ dictionary that is useful in places ordinary dicts can’t be used.

Defining a list in Python is easy—just use the bracket syntax to indicate items in a list, like this: list_of_ints = [1, 2, 3] Items in a list do not have to all be the same type; they can be any ...

A DataFrame is a data structure constructed with rows and columns, similar to a database or Excel spreadsheet. It consists of a dictionary of lists in which the lists each have their own identifiers ...

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