# Python | Remove duplicate tuples from list of tuples

• Last Updated : 30 Jul, 2019

Given a list of tuples, Write a Python program to remove all the duplicated tuples from the given list.

Examples:

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

Input : [('a', 'z'), ('a', 'x'), ('z', 'x'), ('a', 'x'), ('z', 'x')]
Output : [('a', 'z'), ('a', 'x'), ('z', 'x')]
```

Method #1 : List comprehension

This is a naive approach to use list comprehension. Here, we use two for loops and set data structure to cancel out all the duplicates.

 `# Python3 program to remove duplicate ``# tuples from list of tuples`` ` `def` `removeDuplicates(lst):``     ` `    ``return` `[t ``for` `t ``in` `(``set``(``tuple``(i) ``for` `i ``in` `lst))]``         ` `# Driver code``lst ``=` `[(``1``, ``2``), (``5``, ``7``), (``3``, ``6``), (``1``, ``2``)]``print``(removeDuplicates(lst))`
Output:
```[(1, 2), (5, 7), (3, 6)]
```

Method #2 : List comprehension (Efficient approach)

This method is efficient as compared to the above method, here we use a single for loop within list comprehension and then convert it to set to remove duplicates and then again convert it to list.

 `# Python3 program to remove duplicate ``# tuples from list of tuples`` ` `def` `removeDuplicates(lst):``     ` `    ``return` `list``(``set``([i ``for` `i ``in` `lst]))``         ` `# Driver code``lst ``=` `[(``1``, ``2``), (``5``, ``7``), (``3``, ``6``), (``1``, ``2``)]``print``(removeDuplicates(lst))`
Output:
```[(1, 2), (5, 7), (3, 6)]
```

Method #3 : Python enumerate() method

 `# Python3 program to remove duplicate ``# tuples from list of tuples`` ` `def` `removeDuplicates(lst):``     ` `    ``return` `[[a, b] ``for` `i, [a, b] ``in` `enumerate``(lst) ``    ``if` `not` `any``(c ``=``=` `b ``for` `_, c ``in` `lst[:i])]``         ` `# Driver code``lst ``=` `[(``1``, ``2``), (``5``, ``7``), (``3``, ``6``), (``1``, ``2``)]``print``(removeDuplicates(lst))`
Output:
```[[1, 2], [5, 7], [3, 6]]
```

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