Python Program to Remove Duplicate Element From a List

Finding duplicate elements in a list involves iterating over the list and checking if each element occurs more than once. If an element occurs more than once, then it is a duplicate element.

Python Code : #

The Below Python program removes duplicate elements from a given list:

def remove_duplicates(lst):
    """
    Removes duplicate elements from the given list and returns a new list.
    """
    return list(set(lst))

You can use this function by passing in a list as an argument, like this:

lst = [1, 2, 3, 2, 4, 1, 5]
new_lst = remove_duplicates(lst)
print(new_lst)

This will output a new list that contains the same elements as the original list, but with the duplicates removed:

[1, 2, 3, 4, 5]

If you want to preserve the order of the elements in the original list, you can use a slightly different approach that uses a dictionary to keep track of the unique elements:

def remove_duplicates(lst):
    """
    Removes duplicate elements from the given list while preserving the order of the remaining elements.
    Returns a new list.
    """
    seen = {}
    new_lst = []
    for item in lst:
        if item not in seen:
            seen[item] = True
            new_lst.append(item)
    return new_lst

You can use this modified function in the same way as before to remove duplicates while preserving the order of the elements in the original list.