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Python Program to find sum of array
• Difficulty Level : Easy
• Last Updated : 22 Oct, 2020

Given an array of integers, find the sum of its elements.

Examples :

```Input : arr[] = {1, 2, 3}
Output : 6
1 + 2 + 3 = 6

Input : arr[] = {15, 12, 13, 10}
Output : 50
```

Method 1:

 `# Python 3 code to find sum ``# of elements in given array ``def` `_sum(arr): ``     ` `    ``# initialize a variable``    ``# to store the sum``    ``# while iterating through``    ``# the array later``    ``sum``=``0``     ` `    ``# iterate through the array``    ``# and add each element to the sum variable``    ``# one at a time``    ``for` `i ``in` `arr:``        ``sum` `=` `sum` `+` `i``         ` `    ``return``(``sum``) `` ` `# driver function ``arr``=``[] ``# input values to list ``arr ``=` `[``12``, ``3``, ``4``, ``15``] `` ` `# calculating length of array ``n ``=` `len``(arr) `` ` `ans ``=` `_sum(arr) `` ` `# display sum ``print` `(``'Sum of the array is '``, ans) `` ` `# This code is contributed by Himanshu Ranjan `
Output:
```Sum of the array is  34
```

Method 2:

 `# Python 3 code to find sum ``# of elements in given array``# driver function``arr ``=` `[]`` ` `# input values to list``arr ``=` `[``12``, ``3``, ``4``, ``15``]`` ` `# sum() is an inbuilt function in python that adds ``# all the elements in list,set and tuples and returns``# the value ``ans ``=` `sum``(arr)`` ` `# display sum``print` `(``'Sum of the array is '``,ans)`` ` `# This code is contributed by Dhananjay Patil `
Output:
```Sum of the array is  34
```

Please refer complete article on Program to find sum of elements in a given array for more details!

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