Exercise on www.practicepython.org

list_remove_duplicates.py

import numpy


def rnd_list():
    size_of_list = numpy.random.randint(10, 20)
    return numpy.random.randint(0, 100, size_of_list)

def rm_duplicates_1(lst):
    return list(set(lst))

def rm_duplicates_2(lst):
    new = list()
    for i in lst:
        if i not in new:
            new.append(i)
    return new

def intersection(list1, list2):
    list1, list2 = rm_duplicates_1(list1), rm_duplicates_1(list2)
    list_intersection = [i for i in list1 if i in list2]
    return list_intersection

a, b = rnd_list(), rnd_list()

print(str(a)+'\n'+str(b)+'\n')

print(rm_duplicates_1(a))
print(rm_duplicates_2(a))
print(intersection(a, b))