In this program, you will learn how to find the sum of all prime numbers in an array in Python.

`a = arr.array('i', [2, 3, 4, 5])`

## Example: How to find the sum of all prime numbers in an array in Python

```
import array as arr
a = arr.array('i', [2, 3, 4, 5])
s = 0
for i in a:
num = i
j = 2
f = 1
while j < num:
if num % j == 0:
f = 0
break
j = j + 1
if f == 1:
s = s + num
print("Sum of all prime numbers are : ", s)
```

#### Output:

`Sum of all prime numbers are : 10`