How to get ride of dups in a list in python code example

Example 1: remove duplicates python

mylist = ["a", "b", "a", "c", "c"]
mylist = list(dict.fromkeys(mylist))

Example 2: python remove duplicate numbers

duplicate = [2, 4, 10, 20, 5, 2, 20, 4] 
print(list(set(duplicate))