/Python/Python efficiently find duplicates in list

Python efficiently find duplicates in list

Count the duplicates in a list in python

some_list=['a','b','c','b','d','m','n','n']

 my_list=sorted(some_list)
 
duplicates=[]
for i in my_list:
     if my_list.count(i)>1:
         if i not in duplicates:
             duplicates.append(i)
 
print(duplicates)

How to check if there are duplicates in a list python

>>> your_list = ['one', 'two', 'one']
>>> len(your_list) != len(set(your_list))
True

Python efficiently find duplicates in list

from collections import Counter

def get_duplicates(array):
    c = Counter(array)
    return [k for k in c if c[k] > 1]

Source: stackoverflow.com

Similar codes

1 vote235 views2 answers
Streamlit dropdown
Python
0 vote149 views1 answer
Python sum whole matrix comand
Python
1 vote191 views1 answer
F string python not working in linux
Python
1 vote174 views2 answers
Python read parquet
Python
0 vote141 views1 answer
Send operator by parameter python
Python
3 votes133 views1 answer
Visual studio code import library python
Python
0 vote170 views1 answer
Start of my python career
Python
5 votes198 views4 answers
Dropna for specific column pandas
Python
10 votes143 views3 answers
How to make a rect in pygame
Python
1 vote180 views1 answer
Django get id of newly created object
Python Django