How to eliminate duplicates in a list preserving previous order

168 ●8 ●13 ●23

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

1 Answer

Sort by » oldest newest most voted

6972 ●9 ●52 ●163

For example via list comprehension:

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

Please start posting anonymously - your entry will be published after you log in or create a new account.

1 follower

Asked: 2 years ago

Seen: 415 times

Last updated: Oct 26 '22