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Python – Filter Tuples with All Even Elements
• Last Updated : 02 Sep, 2020

Given List of tuples, filter only those with all even elements.

Input : test_list = [(6, 4, 2, 8), (5, 6, 7, 6), (8, 1, 2), (7, )]
Output : [(6, 4, 2, 8)]
Explanation : Only 1 tuple with all even elements.

Input : test_list = [(6, 4, 2, 9), (5, 6, 7, 6), (8, 1, 2), (7, )]
Output : []
Explanation : No tuple with all even elements.

Method #1 : Using loop

In this, we iterate each tuple, and check for all even elements using % operator and if even one element is odd, tuple is flagged and not added in result list.

## Python3

 `# Python3 code to demonstrate working of ``# Filter Tuples with All Even Elements``# Using loop`` ` `# initializing list``test_list ``=` `[(``6``, ``4``, ``2``, ``8``), (``5``, ``6``, ``7``, ``6``), (``8``, ``0``, ``2``), (``7``, )]`` ` `# printing original list``print``(``"The original list is : "` `+` `str``(test_list))`` ` `res_list ``=` `[]``for` `sub ``in` `test_list:``    ``res ``=` `True` `     ` `    ``# check if all are even``    ``for` `ele ``in` `sub:``        ``if` `ele ``%` `2` `!``=` `0``:``            ``res ``=` `False``            ``break``    ``if` `res:``        ``res_list.append(sub)`` ` `# printing results``print``(``"Filtered Tuples : "` `+` `str``(res_list))`
Output
```The original list is : [(6, 4, 2, 8), (5, 6, 7, 6), (8, 0, 2), (7, )]
Filtered Tuples : [(6, 4, 2, 8), (8, 0, 2)]
```

Method #2 : Using all() + list comprehension

In this, the task of checking for all elements to be even is done using all(), and list comprehension is used for task of filtering post checking.

## Python3

 `# Python3 code to demonstrate working of ``# Filter Tuples with All Even Elements``# Using all() + list comprehension`` ` `# initializing list``test_list ``=` `[(``6``, ``4``, ``2``, ``8``), (``5``, ``6``, ``7``, ``6``), (``8``, ``0``, ``2``), (``7``, )]`` ` `# printing original list``print``(``"The original list is : "` `+` `str``(test_list))`` ` `# testing for tuple to be even using all()``res ``=` `[sub ``for` `sub ``in` `test_list ``if` `all``(ele ``%` `2` `=``=` `0` `for` `ele ``in` `sub)]`` ` `# printing results``print``(``"Filtered Tuples : "` `+` `str``(res))`
Output
```The original list is : [(6, 4, 2, 8), (5, 6, 7, 6), (8, 0, 2), (7, )]
Filtered Tuples : [(6, 4, 2, 8), (8, 0, 2)]
```

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