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# Python – Convert Tuple Matrix to Tuple List

• Last Updated : 30 Dec, 2020

Given a Tuple Matrix, flatten to tuple list with each tuple representing each column.

Input : test_list = [[(4, 5), (7, 8)], [(10, 13), (18, 17)]]
Output : [(4, 7, 10, 18), (5, 8, 13, 17)]
Explanation : All column number elements contained together.

Input : test_list = [[(4, 5)], [(10, 13)]]
Output : [(4, 10), (5, 13)]
Explanation : All column number elements contained together.

Method #1 : Using list comprehension + zip()

In this, we perform task of flattening using list comprehension and zip() is used to perform column pairing to render as tuple pairs.

## Python3

 `# Python3 code to demonstrate working of ``# Convert Tuple Matrix to Tuple List``# Using list comprehension + zip()`` ` `# initializing list``test_list ``=` `[[(``4``, ``5``), (``7``, ``8``)], [(``10``, ``13``), (``18``, ``17``)], [(``0``, ``4``), (``10``, ``1``)]]`` ` `# printing original list``print``(``"The original list is : "` `+` `str``(test_list))`` ` `# flattening ``temp ``=` `[ele ``for` `sub ``in` `test_list ``for` `ele ``in` `sub]`` ` `# joining to form column pairs``res ``=` `list``(``zip``(``*``temp))`` ` `# printing result ``print``(``"The converted tuple list : "` `+` `str``(res))`
Output
```The original list is : [[(4, 5), (7, 8)], [(10, 13), (18, 17)], [(0, 4), (10, 1)]]
The converted tuple list : [(4, 7, 10, 18, 0, 10), (5, 8, 13, 17, 4, 1)]
```

Method #2 : Using chain.from_iterable() + zip()

In this, task of flattening is performed using chain.from_iterable() and zip() is used to perform the task of column pairing.

## Python3

 `# Python3 code to demonstrate working of ``# Convert Tuple Matrix to Tuple List``# Using chain.from_iterable() + zip()``from` `itertools ``import` `chain`` ` `# initializing list``test_list ``=` `[[(``4``, ``5``), (``7``, ``8``)], [(``10``, ``13``), (``18``, ``17``)], [(``0``, ``4``), (``10``, ``1``)]]`` ` `# printing original list``print``(``"The original list is : "` `+` `str``(test_list))`` ` `# flattening using from_iterable``res ``=` `list``(``zip``(``*``chain.from_iterable(test_list)))`` ` `# printing result ``print``(``"The converted tuple list : "` `+` `str``(res))`
Output
```The original list is : [[(4, 5), (7, 8)], [(10, 13), (18, 17)], [(0, 4), (10, 1)]]
The converted tuple list : [(4, 7, 10, 18, 0, 10), (5, 8, 13, 17, 4, 1)]
```

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