The conversation between human and AI assistant.
Self teaching Computer programmer, cant quite figure out this problem in a book im reading?
That sounds like it could work for my problem. How do I implement it in Python?
You can use the bisect module in Python's standard library to perform a binary search on a sorted array. Here's an example:

import bisect

def binary_search(arr, x):
    i = bisect.bisect_left(arr, x)
    if i != len(arr) and arr[i] == x:
        return i
    else:
        return -1

This function takes an array and a value to search for and returns either the index of the value in the array or -1 if the value isn't found.