Change language

# Python | Get duplicate tuples from a list

|

Method # 1: Using a comprehension list + ` set () + count () `
The initial approach that can be taken is that we can iterate over each tuple and check its number in the list with ` count () `, if it is greater than one we can add it to the list. To remove multiple padding, we can convert the result to a set using ` set () `.

 ` # Python3 code to demonstrate how it works ` ` # Get duplicate tuples from the list ` ` # Using comprehension list + set () + count () `   ` # initialize the list ` ` test_list ` ` = ` ` [(` ` 3 ` `, ` ` 4 ` `), (` ` 4 ` `, ` ` 5 ` `), (` ` 3 ` `, ` ` 4 ` `) , ` ` (` ` 3 ` `, ` ` 4 ` `), (` ` 4 ` `, ` ` 5 ` `), (` ` 6 ` `, ` ` 7 ` `)] `   ` # print original list ` ` print ` ` (` ` "The original list:" ` ` + ` ` str ` ` (test_list)) `   ` # Get duplicate tuples from the list ` ` # Using comprehension list + set () + count () ` ` res ` ` = ` ` list ` ` (` ` set ` ` ([ele ` ` for ` ` ele ` ` in ` ` test_list ` ` if ` ` test_list.count (ele)" ` ` 1 ` `])) `   ` # print result ` ` print ` ` ( ` ` "All the duplicates from list are:" ` ` + ` ` str ` ` (res)) `

Exit:

` The original list: [(3, 4), (4, 5), (3, 4), (3, 4), (4, 5), (6, 7) ] All the duplicates from list are: [(4, 5), (3, 4)] `

Method # 2: Using ` Counter () + items () ` + list comprehension
A combination of the above functions can also be used to accomplish this specific task. In this case, we just get the count of each occurrence of the element, using ` Counter () ` as a dictionary, and then retrieve all those with a value greater than 1.

 ` # Python3 code to demonstrate how it works ` ` # Get duplicate tuples from the list ` ` # Usage list comprehension + Counter () + items () ` ` from ` ` collections ` ` import ` ` Counter `   ` # initialize the list ` ` test_list ` ` = ` ` [(` ` 3 ` `, ` ` 4 ` `), (` 4 `, ` ` 5 ` `), (` ` 3 ` `, ` ` 4 ` ` ), ` ` (` ` 3 ` `, ` ` 4 ` `), (` ` 4 ` `, ` ` 5 ` `), (` ` 6 ` `, ` ` 7 ` `)] `   ` # print original list ` ` print ` ` (` ` "The original list:" ` ` + ` ` str ` ` (test_list)) ` ` `  ` # Get duplicate tuples from the list ` ` # Using a list comprehension + Counter () + items () ` ` res ` ` = ` ` [ele ` ` for ` ` ele, count ` ` in ` ` Counter (test_list) .items () ` ` if ` ` count" ` ` 1 ` `] `   ` # print result ` ` print ` ` (` ` "All the duplicates from list are:" ` ` + ` ` str ` ` (res)) `

Output:

` The original list: [(3, 4), (4, 5), (3, 4), (3, 4), (4, 5), (6, 7)] All the duplicates from list are: [(4, 5), (3, 4)] `

## Shop

Learn programming in R: courses

\$

Best Python online courses for 2022

\$

Best laptop for Fortnite

\$

Best laptop for Excel

\$

Best laptop for Solidworks

\$

Best laptop for Roblox

\$

Best computer for crypto mining

\$

Best laptop for Sims 4

\$

Latest questions

NUMPYNUMPY

Common xlabel/ylabel for matplotlib subplots

NUMPYNUMPY

How to specify multiple return types using type-hints

NUMPYNUMPY

Why do I get "Pickle - EOFError: Ran out of input" reading an empty file?

NUMPYNUMPY

Flake8: Ignore specific warning for entire file

NUMPYNUMPY

glob exclude pattern

NUMPYNUMPY

How to avoid HTTP error 429 (Too Many Requests) python

NUMPYNUMPY

Python CSV error: line contains NULL byte

NUMPYNUMPY

csv.Error: iterator should return strings, not bytes

## Wiki

Python | How to copy data from one Excel sheet to another

Common xlabel/ylabel for matplotlib subplots

Check if one list is a subset of another in Python

How to specify multiple return types using type-hints

Printing words vertically in Python

Python Extract words from a given string

Cyclic redundancy check in Python

Finding mean, median, mode in Python without libraries