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# Python | Record elements Average in List

• Difficulty Level : Expert
• Last Updated : 10 Feb, 2020

Given a list of tuples, write a program to find average of similar tuples in list.

Examples

```Input:
[('Geeks', 10), ('For', 10), ('Geeks', 2), ('For', 9), ('Geeks', 10)]

Output:
Resultant list of tuples: [('For', 9.5), ('Geeks', 7.333333333333333)]

Input:
[('Akshat', 10), ('Garg', 10), ('Akshat', 2), ('Garg', 9), ('Akshat', 10)]

Output:
Resultant list of tuples: [('Akshat', 7.333333333333333), ('Garg', 9.5)]
```

Method #1: Using List Comprehension

 `# Python code to demonstrate``# find average of similar tuples in list`` ` `# initialising list of tuples``ini_list ``=` `[(``'Akshat'``, ``10``), (``'Garg'``, ``10``), (``'Akshat'``, ``2``),``                            ``(``'Garg'``, ``9``), (``'Akshat'``, ``10``)]`` ` `# finding average of similar entries``def` `avg(l):``    ``return` `sum``(l)``/``len``(l)`` ` `result ``=` `[(n, avg([v[``1``] ``for` `v ``in` `ini_list``                ``if` `v[``0``] ``is` `n])) ``for` `n ``in` `set``([n[``0``] ``for` `n ``in` `ini_list])]`` ` `# printing result``print` `(``"Resultant list of tuples: {}"``.``format``(result))`

Output:

```Resultant list of tuples: [('Akshat', 7.333333333333333), ('Garg', 9.5)]
```

Method #2: Converting into dictionary

 `# Python code to demonstrate``# find average of similar tuples in list`` ` `# initialising list of tuples``ini_list ``=` `[(``'Akshat'``, ``10``), (``'Garg'``, ``10``), (``'Akshat'``, ``2``), ``                            ``(``'Garg'``, ``9``), (``'Akshat'``, ``10``)]`` ` `# finding average of similar entries``temp_dict ``=` `dict``()`` ` `for` `tuple` `in` `ini_list:``    ``key, val ``=` `tuple``    ``temp_dict.setdefault(key, []).append(val)`` ` `result ``=` `[]``for` `name, values ``in` `temp_dict.items():``    ``result.append((name, (``sum``(values)``/``len``(values))))`` ` `# printing result``print``(``"Resultant list of tuples: {}"``.``format``(result))`

Output:

```Resultant list of tuples: [('Garg', 9.5), ('Akshat', 7.333333333333333)]
```

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