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This article mainly introduces how python uses collections to store unique values. It is very detailed and has a certain reference value. Interested friends must finish reading it!

Use collections to store unique values

If we have a list with multiple values and only need unique values, a good trick is to convert our list to a collection. The collection is an unordered collection data type with no duplicate elements, so in this case, it removes all duplicate elements.

My_list = [1 set 2 3 removes duplicates 4 5 6 7 7] my_set = set (my_list) # removes duplicates

If we already know that we need a unique element, such as the prime number here, we can immediately create a collection with curly braces. This allows Python to do some internal optimizations, and it also has some convenient ways to calculate the intersection and differences between the two sets.

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