How to duplicate elements in a list in python

There are several methods to deduplicate elements in a list in Python:

Method 1:

Use the built-in function set: (Recommendation:What does set mean in python)

list1 = [1, 2, 3, 3, 4, 4, 5, 6, 6, 6, 7, 8, 9] list2 = list(set(list1)) print(list2)

Method 2:

Traverse to remove duplicates (Recommendation:What are the methods for traversing a list in Python)

list1 = [1, 2, 3, 3, 4, 4, 5, 6, 6, 6, 7, 8, 9] list2=[] for i in list1: if not i in list2: list2.append(i) print(list2)

List derivation

list1 = [1, 2, 3, 3, 4, 4, 5, 6, 6, 6, 7, 8, 9] list2=[] [list2.append(i) for i in list1 if not i in list2]

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