+ 2

Remove duplicates from a list

In Python, how can I efficiently remove duplicates from a list while maintaining the original order of elements? I have a list of integers, and I want to remove duplicate values but keep the first occurrence of each value in the order they appear. What’s the most efficient way to achieve this in Python?

22nd Aug 2024, 8:02 PM
Melkon
Melkon - avatar
2 Respuestas
+ 5
You can compare the different alternatives by benchmarking: https://stackoverflow.com/questions/1593019/is-there-any-simple-way-to-benchmark-JUMP_LINK__&&__python__&&__JUMP_LINK-script#1593034 https://superfastpython.com/benchmark-python-code/ Some already did: https://www.peterbe.com/plog/fastest-way-to-uniquify-a-list-in-python-3.6 I tried to use set() and then make sure the output is ordered correctly. Depending on the Python implementation, the order is maintained in the set – but don't rely on it. https://sololearn.com/compiler-playground/crWeMwdWluU0/?ref=app
22nd Aug 2024, 9:07 PM
Lisa
Lisa - avatar
+ 3
Melkon , from my point of view not only the *performance of execution speed* should be measured, but also the *memory consumption*. some online platforms like leetcode are measuring these 2 parameters to judge as an additional check if your code can pass the test cases or not.
23rd Aug 2024, 3:34 PM
Lothar
Lothar - avatar