Sets in Python 3
Unordered and unindexed collection of elements are represented as sets in python. Hence,They cannot be accessed by referring to an index because unordered items has no index.These are written with curly brackets. Mathematical operations like union, intersection , difference , symmetric operations and other regular operations like add, update to add or update elements , discard or remove to delete elements from a set. There is another type of set called frozen set which only allows mathematical operations. Checking subset relation between two sets and many other operations which have huge applications in data analysis and other application programming requirements.
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