# Python Program to find sum of array

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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