A set is a collection data type that cannot have duplicate elements.<\/strong> It\u2019s unordered and mutable, allowing different set operations, such as union, intersection, difference, to be performed on it.<\/p>\n\n\n\nDepending on the various use-cases, you\u2019d want to know how to calculate the set size or length in Python.<\/p>\n\n\n\n
How to calculate the Python set size?<\/h2>\n\n\n\n
To find the size of set in Python, use the built-in len()<\/code> method.<\/strong> The len()<\/code> method can be used with any other collection or sequence too, and it calculates how many elements the given collection contains. <\/strong><\/p>\n\n\n\nThe syntax looks like this:
len(X)<\/code>
where X is the Python set defined with set()<\/code> or with curly braces {}<\/code>.<\/p>\n\n\n\nIn our case, the len()<\/code> method calculates how many elements the Python set contains. Since set allows only distinct elements, by calculating the set length in Python you\u2019ll get the exact number of distinct elements.<\/p>\n\n\n\n