Find the smallest integer in the array

Instructions
Given an array of integers your solution should find the smallest integer.
For example:

• Given [34, 15, 88, 2] your solution will return 2
• Given [34, -345, -1, 100] your solution will return -345

You can assume, for the purpose of this kata, that the supplied array will not be empty.
Solution

def find_smallest_int(arr):
   return min(arr)