Python | Remove Duplicates from a List

The job is simple. We need to take a list, with duplicate elements in it and generate another list which only contains the element without the duplicates in them.

Examples:

Input : [2, 4, 10, 20, 5, 2, 20, 4]
Output : [2, 4, 10, 20, 5]

Input : [28, 42, 28, 16, 90, 42, 42, 28]
Output : [28, 42, 16, 90]


We can use not in on list to find out the duplicate items. We create a result list and insert only those that are not already not in.

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# Python code to remove duplicate elements
def Remove(duplicate):
    final_list = []
    for num in duplicate:
        if num not in final_list:
            final_list.append(num)
    return final_list
      
# Driver Code
duplicate = [2, 4, 10, 20, 5, 2, 20, 4]
print(Remove(duplicate))

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Output:

[2, 4, 10, 20, 5]


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