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# Python – Remove Tuples from the List having every element as None

• Last Updated : 11 Oct, 2020

Given a Tuple list, remove all tuples with all None values.

Input : test_list = [(None, 2), (None, None), (3, 4), (12, 3), (None, )]
Output : [(None, 2), (3, 4), (12, 3)]
Explanation : All None tuples are removed.

Input : test_list = [(None, None), (None, None), (3, 4), (12, 3), (None, )]
Output : [(3, 4), (12, 3)]
Explanation : All None tuples are removed.

Method #1 : Using all() + list comprehension

In this, we use all() to check for all None values for discarding and list comprehension does task of iteration.

## Python3

 `# Python3 code to demonstrate working of ``# Remove None Tuples from List``# Using all() + list comprehension`` ` `# initializing list``test_list ``=` `[(``None``, ``2``), (``None``, ``None``), (``3``, ``4``), (``12``, ``3``), (``None``, )]`` ` `# printing original list``print``(``"The original list is : "` `+` `str``(test_list))`` ` `# negating result for discarding all None Tuples``res ``=` `[sub ``for` `sub ``in` `test_list ``if` `not` `all``(ele ``=``=` `None` `for` `ele ``in` `sub)]`` ` `# printing result ``print``(``"Removed None Tuples : "` `+` `str``(res))`

Output:

The original list is : [(None, 2), (None, None), (3, 4), (12, 3), (None,)]
Removed None Tuples : [(None, 2), (3, 4), (12, 3)]

Method #2 : Using filter() + lambda + all()

In this method, task of filtering None tuples is done using filter() and lambda function to provide None checking functionality using all().

## Python3

 `# Python3 code to demonstrate working of ``# Remove None Tuples from List``# Using filter() + lambda + all()`` ` `# initializing list``test_list ``=` `[(``None``, ``2``), (``None``, ``None``), (``3``, ``4``), (``12``, ``3``), (``None``, )]`` ` `# printing original list``print``(``"The original list is : "` `+` `str``(test_list))`` ` `# filter() + lambda to drive logic of discarding tuples``res ``=` `list``(``filter``(``lambda` `sub : ``not` `all``(ele ``=``=` `None` `for` `ele ``in` `sub), test_list))`` ` `# printing result ``print``(``"Removed None Tuples : "` `+` `str``(res))`

Output:

The original list is : [(None, 2), (None, None), (3, 4), (12, 3), (None,)]
Removed None Tuples : [(None, 2), (3, 4), (12, 3)]

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