If the order doesn't matter, you can use sets.
They come from set theory and do what you want.
Remind: Sets are not ordered and sets do only have unique elements.
They come from set theory and do what you want.
Remind: Sets are not ordered and sets do only have unique elements.
set('holla') - set('hello') # the solution
set('holla') | set('hello')
set('holla') & set('hello')
set('holla') ^ set('hello')
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All humans together. We don't need politicians!
All humans together. We don't need politicians!