How to eliminate duplicates in a list preserving previous order

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Ex: if A=[1,5,3,3,4,9,9,9,1] I want to obtain [1,5,3,4,9,1] in a simple way

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For example via list comprehension:

B = [A[i] for i in range(len(A)) if i==0 or A[i]!=A[i-1]]

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Asked: 2 years ago

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Last updated: Oct 26 '22