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# Python | Find whether all tuple have same length

• Last Updated : 01 Feb, 2023

Given a list of tuples, the task is to find whether all tuple have same length.
Below are some ways to achieve the above task.
Method #1: Using Iteration

## Python3

 `# Python code to find whether all``# tuple have equal length` `# Input List initialization``Input` `=` `[(``11``, ``22``, ``33``), (``44``, ``55``, ``66``)]` `# printing``print``(``"Initial list of tuple"``, ``Input``)` `# K Initialization``k ``=` `3``flag ``=` `1` `# Iteration``for` `tuple` `in` `Input``:``    ``if` `len``(``tuple``) !``=` `k:``        ``flag ``=` `0``        ``break` `# Checking whether all tuple``# have length equal to 'K' in list of tuple``if` `flag:``    ``print``(``"All tuples have same length"``)``else``:``    ``print``(``"Tuples does not have same length"``)`

Output:

```Initial list of tuple [(11, 22, 33), (44, 55, 66)]
All tuples have same length```

Time Complexity: O(n), where n is the number of tuples in the input list.
Auxiliary Space Complexity: O(1), as the space required is constant regardless of the size of the input list.

Method #2: Using all()

## Python3

 `# Python code to find whether all tuple``# have equal length` `# Input list initialization``Input` `=` `[(``11``, ``22``, ``33``), (``44``, ``55``, ``66``), (``11``, ``23``)]``k ``=` `2` `# Printing``print``(``"Initial list of tuple"``, ``Input``)` `# Using all()``Output ``=``(``all``(``len``(elem) ``=``=` `k ``for` `elem ``in` `Input``))` `# Checking whether all tuple``# have equal length``if` `Output:``    ``print``(``"All tuples have same length"``)``else``:``    ``print``(``"Tuples does not have same length"``)`

Output:

```Initial list of tuple [(11, 22, 33), (44, 55, 66), (11, 23)]
Tuples does not have same length```

Method #3 : Using count() and len() methods

## Python3

 `# Python code to find whether all``# tuple have equal length` `# Input List initialization``Input` `=` `[(``11``, ``22``, ``33``), (``44``, ``55``, ``66``)]` `# printing``print``(``"Initial list of tuple"``, ``Input``)` `# K Initialization``k ``=` `3``x``=``[]``# Iteration``for` `tuple` `in` `Input``:``    ``x.append(``len``(``tuple``))`  `# Checking whether all tuple``# have length equal to 'K' in list of tuple``if` `x.count(k)``=``=``len``(``Input``):``    ``print``(``"All tuples have same length"``)``else``:``    ``print``(``"Tuples does not have same length"``)`

Output

```Initial list of tuple [(11, 22, 33), (44, 55, 66)]
All tuples have same length```

Method #4 : Using set to store the lengths of the tuples

This method uses a set to store the lengths of the tuples in the input list. It then checks if the length of the set is equal to 1, which means that all the tuples have the same length. This method is efficient because it only requires a single pass through the input list and the set data structure allows for fast membership testing.

## Python3

 `def` `check_tuple_length(input_list):``  ``# Create a set of the lengths of the tuples in the input list``  ``lengths ``=` `{``len``(tup) ``for` `tup ``in` `input_list}``  ``# Check if the length of the set is equal to 1, which means all the tuples have the same length``  ``return` `len``(lengths) ``=``=` `1``#initializaion``Input` `=` `[(``11``, ``22``, ``33``), (``44``, ``55``, ``66``)]``Output ``=` `check_tuple_length(``Input``)``print``(f``"Input: {Input}"``)``print``(f``"Output: {Output}"``)` `Input` `=` `[(``11``, ``22``, ``33``), (``44``, ``55``, ``66``), (``11``, ``23``)]``Output ``=` `check_tuple_length(``Input``)``print``(f``"Input: {Input}"``)``print``(f``"Output: {Output}"``)``#This code is contributed by Edula Vinay Kumar Reddy`

Output

```Input: [(11, 22, 33), (44, 55, 66)]
Output: True
Input: [(11, 22, 33), (44, 55, 66), (11, 23)]
Output: False```

Time complexity: O(n) where n is the number of tuples in the input list
Auxiliary Space: O(n) to store the set of lengths

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