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# Python | Check if tuple has any None value

Sometimes, while working with Python, we can have a problem in which we have a record and we need to check if it contains all valid values i.e has any None value. This kind of problem is common in data preprocessing steps. Let’s discuss certain ways in which this task can be performed.

Method #1 : Using any() + map() + lambda Combination of above functions can be used to perform this task. In this, we check for any element using any(), and extension of logic is done by map() and lambda.

## Python3

 `# Python3 code to demonstrate working of``# Check if tuple has any None value``# using any() + map() + lambda` `# initialize tuple``test_tup ``=` `(``10``, ``4``, ``5``, ``6``, ``None``)` `# printing original tuple``print``(``"The original tuple : "` `+` `str``(test_tup))` `# Check if tuple has any None value``# using any() + map() + lambda``res ``=` `any``(``map``(``lambda` `ele: ele ``is` `None``, test_tup))` `# printing result``print``(``"Does tuple contain any None value ? : "` `+` `str``(res))`

Output :

```The original tuple : (10, 4, 5, 6, None)
Does tuple contain any None value ? : True```

Method #2: Using not + all() This checks for the truthness of all elements of the tuple using all() and with not, returns True if there is no None element.

## Python3

 `# Python3 code to demonstrate working of``# Check if tuple has any None value``# using not + all()` `# initialize tuple``test_tup ``=` `(``10``, ``4``, ``5``, ``6``, ``None``)` `# printing original tuple``print``(``"The original tuple : "` `+` `str``(test_tup))` `# Check if tuple has any None value``# using not + all()``res ``=` `not` `all``(test_tup)` `# printing result``print``(``"Does tuple contain any None value ? : "` `+` `str``(res))`

Output :

```The original tuple : (10, 4, 5, 6, None)
Does tuple contain any None value ? : True```

Method #3: Using in operator

## Python3

 `# Python3 code to demonstrate working of``# Check if tuple has any None value` `# initialize tuple``test_tup ``=` `(``10``, ``4``, ``5``, ``6``, ``None``)` `# printing original tuple``print``(``"The original tuple : "` `+` `str``(test_tup))` `# Check if tuple has any None value``res ``=` `None` `in` `test_tup` `# printing result``print``(``"Does tuple contain any None value ? : "` `+` `str``(res))`

Output

```The original tuple : (10, 4, 5, 6, None)
Does tuple contain any None value ? : True```

Method #4 : Using count() method

## Python3

 `# Python3 code to demonstrate working of``# Check if tuple has any None value` `# initialize tuple``test_tup ``=` `(``10``, ``4``, ``5``, ``6``, ``None``)` `# printing original tuple``print``(``"The original tuple : "` `+` `str``(test_tup))` `# Check if tuple has any None value``res ``=` `False``if``(test_tup.count(``None``) >``=` `1``):``    ``res ``=` `True` `# printing result``print``(``"Does tuple contain any None value ? : "` `+` `str``(res))`

Output

```The original tuple : (10, 4, 5, 6, None)
Does tuple contain any None value ? : True```

Method #5 : Using filter()+list()+len()+ lambda functions

## Python3

 `# Python3 code to demonstrate working of``# Check if tuple has any None value` `# initialize tuple``test_tup ``=` `(``10``, ``4``, ``5``, ``6``, ``None``)` `# printing original tuple``print``(``"The original tuple : "` `+` `str``(test_tup))` `# Check if tuple has any None value``res ``=` `len``(``list``(``filter``(``lambda` `x: x ``=``=` `None``, test_tup))) > ``0` `# printing result``print``(``"Does tuple contain any None value ? : "` `+` `str``(res))`

Output

```The original tuple : (10, 4, 5, 6, None)
Does tuple contain any None value ? : True```

Time Complexity: O(N)

Auxiliary Space: O(N)

Method #6: Using itertools.filterfalse()

## Python3

 `#Python3 code to demonstrate working of``#Check if tuple has any None value``import` `itertools``import` `itertools` `#initialize tuple``test_tup ``=` `(``10``, ``4``, ``5``, ``6``, ``None``)` `#printing original tuple``print``(``"The original tuple : "` `+` `str``(test_tup))` `#Check if tuple has any None value``res ``=` `len``(``list``(itertools.filterfalse(``lambda` `x: x ``is` `None``, test_tup))) < ``len``(test_tup)` `#printing result``print``(``"Does tuple contain any None value ? : "` `+` `str``(res))`

Output

```The original tuple : (10, 4, 5, 6, None)
Does tuple contain any None value ? : True```

a time complexity of O(n) where n is the number of elements in the tuple. The space complexity is also O(n) for the method which creates a new list or set from the tuple.

Method#7: Using recursion

## Python3

 `# Python3 code to demonstrate working of``# Check if tuple has any None value``def` `CheckNone(test_tup,i):``  ``if` `len``(test_tup) ``=``=` `i:``    ``return` `False``  ``if` `test_tup[i] ``=``=` `None``:``    ``return` `True``  ``return` `CheckNone(test_tup,i``+``1``)` `# initialize tuple``test_tup ``=` `(``10``, ``4``, ``5``, ``6``, ``None``)` `# printing original tuple``print``(``"The original tuple : "` `+` `str``(test_tup))` `# Check if tuple has any None value``res ``=` `CheckNone(test_tup,``0``)` `# printing result``print``(``"Does tuple contain any None value ? : "` `+` `str``(res))` `#This code is contributed Vinay Pinjala.`

Output

```The original tuple : (10, 4, 5, 6, None)
Does tuple contain any None value ? : True```

Time Complexity: O(N)

Auxiliary Space: O(N)

Method#7: Using for loop and is operator.

## Python3

 `#Python3 code to demonstrate working of``#Check if tuple has any None value` `#initialize tuple``test_tup ``=` `(``10``, ``4``, ``5``, ``6``, ``None``)` `#initializing flag with False by default``flag``=``False` `#printing original tuple``print``(``"The original tuple : "` `+` `str``(test_tup))` `#Check if tuple has any None value using for loop``for` `i ``in` `test_tup:``  ``if` `i ``is` `None``:``    ``flag``=``True``    ``break`  `#printing result``print``(``"Does tuple contain any None value ? : "` `+` `str``(flag))` `#This code contributed by tvsk`

Output

```The original tuple : (10, 4, 5, 6, None)
Does tuple contain any None value ? : True```

Time Complexity: O(N)

Auxiliary Space: O(1)