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# Python | How to get Subtraction of tuples

• Difficulty Level : Basic
• Last Updated : 21 Nov, 2019

Sometimes, while working with records, we might have a common problem of subtracting contents of one tuple with corresponding index of other tuple. This has application in almost all the domains in which we work with tuple records. Let’s discuss certain ways in which this task can be performed.

Method #1 : Using` map() `+ lambda
Combination of above functionalities can solve the problem for us. In this, we compute the subtraction using lambda functions and extend the logic to keys using map().

 `# Python3 code to demonstrate working of``# Subtraction of tuples``# using map() + lambda`` ` `# initialize tuples ``test_tup1 ``=` `(``10``, ``4``, ``5``)``test_tup2 ``=` `(``2``, ``5``, ``18``)`` ` `# printing original tuples ``print``(``"The original tuple 1 : "` `+` `str``(test_tup1))``print``(``"The original tuple 2 : "` `+` `str``(test_tup2))`` ` `# Subtraction of tuples``# using map() + lambda``res ``=` `tuple``(``map``(``lambda` `i, j: i ``-` `j, test_tup1, test_tup2))`` ` `# printing result``print``(``"Resultant tuple after subtraction : "` `+` `str``(res))`
Output :
```The original tuple 1 : (10, 4, 5)
The original tuple 2 : (2, 5, 18)
Resultant tuple after subtraction : (8, -1, -13)
```

Method #2 : Using` map() + sub()`
The combination of above functions can help us achieve this task. In this, we first extend the logic to all using `map()` and then perform subtraction of each index using `sub()`.

 `# Python3 code to demonstrate working of``# Addition of tuples``# using map() + sub()``import` `operator`` ` `# initialize tuples ``test_tup1 ``=` `(``10``, ``4``, ``5``)``test_tup2 ``=` `(``2``, ``5``, ``18``)`` ` `# printing original tuples ``print``(``"The original tuple 1 : "` `+` `str``(test_tup1))``print``(``"The original tuple 2 : "` `+` `str``(test_tup2))`` ` `# Addition of tuples``# using map() + sub()``res ``=` `tuple``(``map``(operator.sub, test_tup1, test_tup2))`` ` `# printing result``print``(``"Resultant tuple after subtraction : "` `+` `str``(res))`
Output :
```The original tuple 1 : (10, 4, 5)
The original tuple 2 : (2, 5, 18)
Resultant tuple after subtraction : (8, -1, -13)
```

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