# Python | Split nested list into two lists

Given a nested 2D list, the task is to split the nested list into two lists such that first list contains first elements of each sublists and second list contains second element of each sublists.

Method #1: Using `map, zip()`

 `# Python code to demonstrate ` `# splitting nested list ` `# into 2 lists ` ` `  `# initialising nested lists ` `ini_list ``=` `[[``1``, ``2``], [``4``, ``3``], [``45``, ``65``], [``223``, ``2``]] ` ` `  `# printing initial lists ` `print` `(``"initial list"``, ``str``(ini_list)) ` ` `  `# code to split it into 2 lists ` `res1, res2 ``=` `map``(``list``, ``zip``(``*``ini_list)) ` ` `  `# printing result ` `print``(``"final lists"``, res1, ``"\n"``, res2) `

Output:

```initial list [[1, 2], [4, 3], [45, 65], [223, 2]]
final lists [1, 4, 45, 223]
[2, 3, 65, 2]
```

Method #2: Using list comprehension

 `# python code to demonstrate ` `# splitting nested list ` `# into 2 lists ` ` `  `# initialising nested lists ` `ini_list ``=` `[[``1``, ``2``], [``4``, ``3``], [``45``, ``65``], [``223``, ``2``]] ` ` `  `# printing initial lists ` `print` `(``"initial list"``, ``str``(ini_list)) ` ` `  `# code to split it into 2 lists ` `res1 ``=` `[i[``1``] ``for` `i ``in` `ini_list] ` `res2 ``=` `[i[``0``] ``for` `i ``in` `ini_list] ` ` `  `# printing result ` `print``(``"final lists"``, ``str``(res1), ``"\n"``, ``str``(res2)) `

Output:

```initial list [[1, 2], [4, 3], [45, 65], [223, 2]]
final lists [2, 3, 65, 2]
[1, 4, 45, 223]
```

Method #3: Using `operator.itemgetter()`

 `# python code to demonstrate ` `# splitting nested list ` `# into 2 lists ` ` `  `from` `operator ``import` `itemgetter ` ` `  `# initialising nested lists ` `ini_list ``=` `[[``1``, ``2``], [``4``, ``3``], [``45``, ``65``], [``223``, ``2``]] ` ` `  `# printing initial lists ` `print` `(``"initial list"``, ``str``(ini_list)) ` ` `  `# code to split it into 2 lists ` `res1 ``=` `list``(``map``(itemgetter(``0``), ini_list)) ` `res2 ``=` `list``(``map``(itemgetter(``1``), ini_list)) ` ` `  `# printing result ` `print``(``"final lists"``, ``str``(res1), ``"\n"``, ``str``(res2)) `

Output:

```initial list [[1, 2], [4, 3], [45, 65], [223, 2]]
final lists [1, 4, 45, 223]
[2, 3, 65, 2]
```

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