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. Letâ€™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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