Binary search algorithm in python

Question

I am trying to implement the binary search in python and have written it as follows. However, I can\'t make it stop whenever needle_element is larger than the largest elemen

Answer 1

Without the lower/upper indexes this should also do:

def exists_element(element, array):
    if not array:
        yield False

    mid = len(array) // 2
    if element == array[mid]:
        yield True
    elif element < array[mid]:
        yield from exists_element(element, array[:mid])
    else:
        yield from exists_element(element, array[mid + 1:])