# python – Sum of elements stored inside a tuple

## python – Sum of elements stored inside a tuple

You can use `map` and `sum` function like this

``````>>> li = [(1, 2), (1, 3), (2, 3)]
>>> map(sum, li)
[3, 4, 5]
``````

Alternatively you can use list comprehension, like this

``````>>> [sum(tup) for tup in li]
[3, 4, 5]
``````

Note: I personally prefer the list comprehension version, because `map` function in Python 3.x will return an iterable `map` object, which needs to be explicitly converted to a list, like this `list(map(sum, li))`.

``````>>> li = [(1, 2), (1, 3), (2, 3)]
>>> map(sum, li)
<map object at 0x7f3dc25bb0f0>
>>> type(map(sum, li))
<class map>
>>> list(map(sum, li))
[3, 4, 5]
``````

But list comprehension will give a list in both Python 2.x and Python 3.x.

You could use list comprehension.

``````>>> li = [(1, 2), (1, 3), (2, 3)]
>>> [x+y for (x,y) in li]
[3, 4, 5]
``````

#### python – Sum of elements stored inside a tuple

Both solutions below will work.

``````li = [(1, 2), (1, 3), (2, 3)]
print([sum(i) for i in li])
``````

or

``````def sumtupleinlist(lst):
return [sum(i) for i in lst]
li = [(1, 2), (1, 3), (2, 3)]
``````

To test the function, run :

``````print(sumtupleinlist(li))
``````