# Python – Filter tuple with all same elements

Given List of tuples, filter tuples which have same values.

Input : test_list = [(5, 6, 5, 5), (6, 6, 6), (9, 10)]
Output : [(6, 6, 6)]
Explanation : 1 tuple with same elements.

Input : test_list = [(5, 6, 5, 5), (6, 5, 6), (9, 10)]
Output : []
Explanation : No tuple with same elements.

Method #1 : Using list comprehension + set() + len()

In this, we check for length of set converted tuple to be 1, if that checks out, tuple is added to result, else, omitted.

## Python3

 `# Python3 code to demonstrate working of  ` `# Filter similar elements Tuples ` `# Using list comprehension + set() + len() ` ` `  `# initializing list ` `test_list ``=` `[(``5``, ``6``, ``5``, ``5``), (``6``, ``6``, ``6``), (``1``, ``1``), (``9``, ``10``)] ` ` `  `# printing original list ` `print``(``"The original list is : "` `+` `str``(test_list)) ` ` `  `# length is computed using len() ` `res ``=` `[sub ``for` `sub ``in` `test_list ``if` `len``(``set``(sub)) ``=``=` `1``] ` `         `  `# printing results ` `print``(``"Filtered Tuples : "` `+` `str``(res)) `

Output

```The original list is : [(5, 6, 5, 5), (6, 6, 6), (1, 1), (9, 10)]
Filtered Tuples : [(6, 6, 6), (1, 1)]
```

Method #2 : Using filter() + lamdba + set() + len()

In this, we perform task of filtering using filter(), and single element logic is checked in lambda function using set() and len().

## Python3

 `# Python3 code to demonstrate working of  ` `# Filter similar elements Tuples ` `# Using filter() + lamdba + set() + len() ` ` `  `# initializing list ` `test_list ``=` `[(``5``, ``6``, ``5``, ``5``), (``6``, ``6``, ``6``), (``1``, ``1``), (``9``, ``10``)] ` ` `  `# printing original list ` `print``(``"The original list is : "` `+` `str``(test_list)) ` ` `  `# end result converted to list object  ` `# filter extracts req. tuples ` `res ``=` `list``(``filter``(``lambda` `sub : ``len``(``set``(sub)) ``=``=` `1``, test_list)) ` `         `  `# printing results ` `print``(``"Filtered Tuples : "` `+` `str``(res)) `

Output

```The original list is : [(5, 6, 5, 5), (6, 6, 6), (1, 1), (9, 10)]
Filtered Tuples : [(6, 6, 6), (1, 1)]
```

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