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Python | Find Maximum difference between tuple pairs
• Last Updated : 03 Nov, 2019

Sometimes, while working with data, we might have a problem in which we need to find maximum differene between available pairs in list. This can be application to many problems in mathematics domain. Let’s discuss certain ways in which this task can be performed.

Method #1 : Using `max()` + list comprehension
The combination of this functions can be used to perform this task. In this, we compute the absolute difference of all pairs and then return the max of it using` max()`.

 `# Python3 code to demonstrate working of``# Maximum difference tuple pair ``# Using list comprehension + max()`` ` `# initialize list``test_list ``=` `[(``3``, ``5``), (``1``, ``7``), (``10``, ``3``), (``1``, ``2``)]`` ` `# printing original list ``print``(``"The original list : "` `+` `str``(test_list))`` ` `# Maximum difference tuple pair ``# Using list comprehension + max()``temp ``=` `[``abs``(b ``-` `a) ``for` `a, b ``in` `test_list]``res ``=` `max``(temp)`` ` `# printing result``print``(``"Maximum difference among pairs : "` `+` `str``(res))`
Output :
```The original list : [(3, 5), (1, 7), (10, 3), (1, 2)]
Maximum difference among pairs : 7
```

Method #2 : Using `max()` + lambda
This is similar to above method. In this the task performed by list comprehension is solved using lambda function, providing the difference computation logic. Returns the max. difference pair.

 `# Python3 code to demonstrate working of``# Maximum difference tuple pair ``# Using lambda + max()`` ` `# initialize list``test_list ``=` `[(``3``, ``5``), (``1``, ``7``), (``10``, ``3``), (``1``, ``2``)]`` ` `# printing original list ``print``(``"The original list : "` `+` `str``(test_list))`` ` `# Maximum difference tuple pair ``# Using lambda + max()``res ``=` `max``(test_list, key ``=` `lambda` `sub: ``abs``(sub[``1``] ``-` `sub[``0``]))`` ` `# printing result``print``(``"Maximum difference among pairs : "` `+` `str``(res))`
Output :
```The original list : [(3, 5), (1, 7), (10, 3), (1, 2)]
Maximum difference among pairs : (10, 3)
```

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