# Python – Extend consecutive tuples

Given list of tuples, join consecutive tuples.

Input : test_list = [(3, 5, 6, 7), (3, 2, 4, 3), (9, 4), (2, 3, 2)]
Output : [(3, 5, 6, 7, 3, 2, 4, 3), (3, 2, 4, 3, 9, 4), (9, 4, 2, 3, 2)]
Explanation : Elements joined with their consecutive tuples.

Input : test_list = [(3, 5, 6, 7), (3, 2, 4, 3)]
Output : [(3, 5, 6, 7, 3, 2, 4, 3)]
Explanation : Elements joined with their consecutive tuples.

Method #1 : Using loop

This is brute way in which this task can be performed. In this, we perform task of joining consecution by access inside loop.

## Python3

 `# Python3 code to demonstrate working of  ` `# Extend consecutive tuples ` `# Using loop ` ` `  `# initializing list ` `test_list ``=` `[(``3``, ``5``, ``6``, ``7``), (``3``, ``2``, ``4``, ``3``), (``9``, ``4``), (``2``, ``3``, ``2``), (``3``, ), (``3``, ``6``)] ` ` `  `# printing original list ` `print``(``"The original list is : "` `+` `str``(test_list)) ` ` `  `res ``=` `[] ` `for` `idx ``in` `range``(``len``(test_list) ``-` `1``): ` `     `  `    ``# joining tuples ` `    ``res.append(test_list[idx] ``+` `test_list[idx ``+` `1``]) ` `         `  `# printing results ` `print``(``"Joined tuples : "` `+` `str``(res)) `

Output

```The original list is : [(3, 5, 6, 7), (3, 2, 4, 3), (9, 4), (2, 3, 2), (3, ), (3, 6)]
Joined tuples : [(3, 5, 6, 7, 3, 2, 4, 3), (3, 2, 4, 3, 9, 4), (9, 4, 2, 3, 2), (2, 3, 2, 3), (3, 3, 6)]
```

Method #2 : Using zip() + list comprehension

In this, we construct consecutive list using zip() and slicing and then form pairs accordingly.

## Python3

 `# Python3 code to demonstrate working of  ` `# Extend consecutive tuples ` `# Using zip() + list comprehension ` ` `  `# initializing list ` `test_list ``=` `[(``3``, ``5``, ``6``, ``7``), (``3``, ``2``, ``4``, ``3``), (``9``, ``4``), (``2``, ``3``, ``2``), (``3``, ), (``3``, ``6``)] ` ` `  `# printing original list ` `print``(``"The original list is : "` `+` `str``(test_list)) ` ` `  `# zip to combine consecutive elements  ` `res ``=` `[a ``+` `b ``for` `a, b ``in` `zip``(test_list, test_list[``1``:])] ` `         `  `# printing results ` `print``(``"Joined tuples : "` `+` `str``(res)) `

Output

```The original list is : [(3, 5, 6, 7), (3, 2, 4, 3), (9, 4), (2, 3, 2), (3, ), (3, 6)]
Joined tuples : [(3, 5, 6, 7, 3, 2, 4, 3), (3, 2, 4, 3, 9, 4), (9, 4, 2, 3, 2), (2, 3, 2, 3), (3, 3, 6)]
```

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