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Python | Reverse each tuple in a list of tuples
• Last Updated : 25 Apr, 2019

Given a list of tuples, write a Python program to reverse each tuple in the given list of tuples.

Examples:

```Input : [(1, 2), (3, 4, 5), (6, 7, 8, 9)]
Output : [(2, 1), (5, 4, 3), (9, 8, 7, 6)]

Input : [('a', 'b'), ('x', 'y'), ('m', 'n')]
Output : [('b', 'a'), ('y', 'x'), ('n', 'm')]
```

Method #1 : Negative-step slicing

We can use standard negative-step slicing `tup[::-1]` to get the reverse of a tuple, and a list comprehension to get that for each tuple.

 `# Python3 program to Reverse ``# each tuple in a list of tuples`` ` `def` `reverseTuple(lstOfTuple):``     ` `    ``return` `[tup[::``-``1``] ``for` `tup ``in` `lstOfTuple]``             ` `# Driver code``lstOfTuple ``=` `[(``1``, ``2``), (``3``, ``4``, ``5``), (``6``, ``7``, ``8``, ``9``)]``print``(reverseTuple(lstOfTuple))`
Output:

```[(2, 1), (5, 4, 3), (9, 8, 7, 6)]
```

Method #2 : Using `reversed()`

The in-built `reversed()` method of Python can also be used to reverse each tuple within list.

 `# Python3 program to Reverse ``# each tuple in a list of tuples`` ` `def` `reverseTuple(lstOfTuple):``     ` `    ``return` `[``tuple``(``reversed``(tup)) ``for` `tup ``in` `lstOfTuple]``             ` `# Driver code``lstOfTuple ``=` `[(``1``, ``2``), (``3``, ``4``, ``5``), (``6``, ``7``, ``8``, ``9``)]``print``(reverseTuple(lstOfTuple))`
Output:
```[(2, 1), (5, 4, 3), (9, 8, 7, 6)]
```

Method #3 : Using `map()` function

Python map() function can also serve the purpose by mapping negative-step slicing to list of tuples.

 `# Python3 program to Reverse ``# each tuple in a list of tuples`` ` `def` `reverseTuple(lstOfTuple):``     ` `    ``return` `list``(``map``(``lambda` `tup: tup[::``-``1``], lstOfTuple))``             ` `# Driver code``lstOfTuple ``=` `[(``1``, ``2``), (``3``, ``4``, ``5``), (``6``, ``7``, ``8``, ``9``)]``print``(reverseTuple(lstOfTuple))`
Output:
```[(2, 1), (5, 4, 3), (9, 8, 7, 6)]
```

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