# Python | Absolute value of list elements

Sometimes, while working with Python list, we need to find the absolute number i.e all the elements with a positive magnitude in list. This problem has an application in various domains of Data Science. Let’s discuss certain ways in which this task can be done.

Method #1 : Using list comprehension + `abs()`
This task can be performed using list comprehension technique in which we just iterate each element and keep finding it’s absolute value using the `abs()`.

 `# Python3 code to demonstrate working of ` `# Absolute value of list elements ` `# using abs() + list comprehension ` ` `  `# initialize list ` `test_list ``=` `[``5``, ``-``6``, ``7``, ``-``8``, ``-``10``] ` ` `  `# printing original list ` `print``(``"The original list is : "` `+` `str``(test_list)) ` ` `  `# Absolute value of list elements ` `# using abs() + list comprehension ` `res ``=`  `[``abs``(ele) ``for` `ele ``in` `test_list] ` ` `  `# printing result ` `print``(``"Absolute value list : "` `+` `str``(res)) `

Output :

```The original list is : [5, -6, 7, -8, -10]
Absolute value list : [5, 6, 7, 8, 10]
```

Method #2 : Using `map() + abs()`
This task can also be performed using `map()`. As above, the task of `map` is to perform the task of extending the absolute number logic to each element in list.

 `# Python3 code to demonstrate working of ` `# Absolute value of list elements ` `# using map() + abs() ` ` `  `# initialize list ` `test_list ``=` `[``5``, ``-``6``, ``7``, ``-``8``, ``-``10``] ` ` `  `# printing original list ` `print``(``"The original list is : "` `+` `str``(test_list)) ` ` `  `# Absolute value of list elements ` `# using map() + abs() ` `res ``=` `list``(``map``(``abs``, test_list)) ` ` `  `# printing result ` `print``(``"Absolute value list : "` `+` `str``(res)) `

Output :

```The original list is : [5, -6, 7, -8, -10]
Absolute value list : [5, 6, 7, 8, 10]
```

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