In Python we can get the unique elements from a list by converting it to a set with set(). Sets are a collection of unique elements:
values = [1, 1, 1, 2, 2, 3, 3, 3, 3]
values = set(values)
print(values)
Output:
{1, 2, 3}
And if we still need a list instead of a set, we can easily convert back to a list using list():
values = [1, 1, 1, 2, 2, 3, 3, 3, 3]
# convert to set to get unique values
values = set(values)
# convert back to list
values = list(values)
print(values)
Output:
[1, 2, 3]
I learned this trick after realizing that unfortunately Python doesn't have a uniq() method like Ruby that does this exact thing.
There's also other ways of getting unique values from a list that you can read about in this GeeksforGeeks article. I didn't cover the other cases because I feel like the easiest way is to use set().
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