# Python – Filter unique valued tuples

• Last Updated : 02 Sep, 2020

Given a Tuple list, filter tuples that don’t contain duplicates.

Input : test_list = [(3, 5, 6, 7), (3, 2, 4, 3), (9, 4, 9), (2, 3, 2)]
Output : [(3, 5, 6, 7)]
Explanation : Rest all tuples have duplicate values.

Input : test_list = [(3, 5, 6, 7, 7), (3, 2, 4, 3), (9, 4, 9), (2, 3, 2)]
Output : []
Explanation : All tuples have duplicate values.

Method #1 : Using loop + set()

In this, all the tuples are iterated, and duplicacy test is done using set(), if length of set is same as tuple, it does’nt contain duplicate.

## Python3

 `# Python3 code to demonstrate working of ``# Filter unique valued tuples``# Using loop + set()`` ` `# initializing list``test_list ``=` `[(``3``, ``5``, ``6``, ``7``), (``3``, ``2``, ``4``, ``3``), (``9``, ``4``), (``2``, ``3``, ``2``)]`` ` `# printing original list``print``(``"The original list is : "` `+` `str``(test_list))`` ` `res ``=` `[]`` ` `for` `sub ``in` `test_list:``     ` `    ``# checking lengths to be equal``    ``if` `len``(``set``(sub)) ``=``=` `len``(sub):``        ``res.append(sub)``         ` `# printing results``print``(``"Filtered tuples : "` `+` `str``(res))`

Output

```The original list is : [(3, 5, 6, 7), (3, 2, 4, 3), (9, 4), (2, 3, 2)]
Filtered tuples : [(3, 5, 6, 7), (9, 4)]
```

Method #2 : Using list comprehension

This performs similar task as above, difference being that this is one liner and compact.

## Python3

 `# Python3 code to demonstrate working of ``# Filter unique valued tuples``# Using list comprehension`` ` `# initializing list``test_list ``=` `[(``3``, ``5``, ``6``, ``7``), (``3``, ``2``, ``4``, ``3``), (``9``, ``4``), (``2``, ``3``, ``2``)]`` ` `# printing original list``print``(``"The original list is : "` `+` `str``(test_list))`` ` `# list comprehension used to filter``res ``=` `[sub ``for` `sub ``in` `test_list ``if` `len``(``set``(sub)) ``=``=` `len``(sub)]``         ` `# printing results``print``(``"Filtered tuples : "` `+` `str``(res))`

Output

```The original list is : [(3, 5, 6, 7), (3, 2, 4, 3), (9, 4), (2, 3, 2)]
Filtered tuples : [(3, 5, 6, 7), (9, 4)]
```

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