Python removing duplicates in list

Question

How can I remove duplicates from this list? x = [name, code]

Some elements of list has the same code: list = [['cafe', '/fr/48349066'], ['cafe', '/fr/48349056'], ['cafe', '/fr/48349066']]

Does this answer your question? [Python list subtraction operation](https://stackoverflow.com/questions/3428536/python-list-subtraction-operation) — Diggy., May 18 '20 at 20:00
1: https://stackoverflow.com/questions/7961363/removing-duplicates-in-lists 2: https://stackoverflow.com/questions/35731289/function-to-remove-duplicates-from-a-list-python 3: https://stackoverflow.com/questions/480214/how-do-you-remove-duplicates-from-a-list-whilst-preserving-order — pacukluka, May 18 '20 at 20:44
Please post a sample of what you've tried so far, and we'll try to help you. — David Hempy, May 19 '20 at 03:09

score 1 · Answer 1 · answered May 18 '20 at 20:03

1

There's probably a more processing-efficient way to do this, but this is the way I've always done stuff like this:

for i in range(len(list)):
    for j in range(len(list)):
        if list[i][1] == list[j][1]:
            list.pop(i)

answered May 18 '20 at 20:03

Sanford Bassett

score 0 · Answer 2 · answered May 18 '20 at 20:07

There is a lot of ways to removing duplicates;

1-) The Naive Method;

new_list = [] 
for i in some_list: 
    if i not in new_list: 
        res.append(i)

2-) Using list comprehension;

new_list = [] 
[new_list.append(x) for x in some_list if x not in new_list]

3-) Using set();

some_list = list(set(some_list))

4-) Using collections.OrderedDict.fromkeys()

from collections import OrderedDict 
new_list = list(OrderedDict.fromkeys(some_list))

2 Answers2