Python – Combine list with other list elements

• Last Updated : 26 Oct, 2022

Given two lists, combine list with each element of the other list.

Examples:

Input : test_list = [3, 5, 7], pair_list = [‘Gfg’, ‘is’, ‘best’]
Output : [([3, 5, 7], ‘Gfg’), ([3, 5, 7], ‘is’), ([3, 5, 7], ‘best’)]
Explanation : All lists paired with each element from other list.

Input : test_list = [3, 5, 7], pair_list = [‘Gfg’, ‘best’]
Output : [([3, 5, 7], ‘Gfg’), ([3, 5, 7], ‘best’)]
Explanation : All lists paired with each element from other list.

Method #1 : Using zip() + len() + list()

In this, we pair each element using zip(), with all the elements of other list using len(), and picking each element at once.

Python3

 `# Python3 code to demonstrate working of``# Combine list with other list elements``# Using zip() + len() + list()` `# initializing list``test_list ``=` `[``3``, ``5``, ``7``, ``9``]` `# printing original list``print``(``"The original list is : "` `+` `str``(test_list))` `# initializing pair list``pair_list ``=` `[``'Gfg'``, ``'is'``, ``'best'``]` `# using zip() to pair element with pair list size``res ``=` `list``(``zip``([test_list] ``*` `len``(pair_list), pair_list))` `# printing result``print``(``"The paired list : "` `+` `str``(res))`

Output

```The original list is : [3, 5, 7, 9]
The paired list : [([3, 5, 7, 9], 'Gfg'), ([3, 5, 7, 9], 'is'), ([3, 5, 7, 9], 'best')]
```

Method #2 : Using product()

In this, we pair the elements using product(), and map each list with each element in pair list.

Python3

 `# Python3 code to demonstrate working of``# Combine list with other list elements``# Using product()``from` `itertools ``import` `product` `# initializing list``test_list ``=` `[``3``, ``5``, ``7``, ``9``]` `# printing original list``print``(``"The original list is : "` `+` `str``(test_list))` `# initializing pair list``pair_list ``=` `[``'Gfg'``, ``'is'``, ``'best'``]` `# product() performs pairing of elements``res ``=` `list``(product([test_list], pair_list))` `# printing result``print``(``"The paired list : "` `+` `str``(res))`

Output

```The original list is : [3, 5, 7, 9]
The paired list : [([3, 5, 7, 9], 'Gfg'), ([3, 5, 7, 9], 'is'), ([3, 5, 7, 9], 'best')]
```

Method #3:  Using append() and tuple() methods

Python3

 `# Python3 code to demonstrate working of``# Combine list with other list elements` `# initializing list``test_list ``=` `[``3``, ``5``, ``7``, ``9``]` `# printing original list``print``(``"The original list is : "` `+` `str``(test_list))` `# initializing pair list``pair_list ``=` `[``'Gfg'``, ``'is'``, ``'best'``]` `res ``=` `[]``for` `i ``in` `pair_list:``    ``x ``=` `[]``    ``x.append(test_list)``    ``x.append(i)``    ``x ``=` `tuple``(x)``    ``res.append(x)``# printing result``print``(``"The paired list : "` `+` `str``(res))`

Output

```The original list is : [3, 5, 7, 9]
The paired list : [([3, 5, 7, 9], 'Gfg'), ([3, 5, 7, 9], 'is'), ([3, 5, 7, 9], 'best')]```

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