Find data in array by using binary search algorithm. Written in Python

binary_search_algo.py

# explanation: https://www.youtube.com/watch?v=IcK2Qyk3cUs
# written by: github.com/Tester2009
def binary_search(arr, val):

    if len(arr)==0 or (len(arr)==1 and arr[0]!=val):
        return False

    mid = arr[len(arr)/2]
    if val==mid:
        print("Found")
    if val<mid:
        return binary_search(arr[:len(arr)/2], val)
    if val>mid:
        return binary_search(arr[len(arr)/2+1:], val)

array_1 = [1, 2, 3, 5, 7, 9]
binary_search(array_1, 7)