Bisect Good Bad Automation Script in Python

import bisect

def find_first_bad(versions):
    """Given a list of version objects with .is_bad(), find first bad version."""
    lo, hi = 0, len(versions)
    while lo < hi:
        mid = (lo + hi) // 2
        if versions[mid].is_bad():
            hi = mid
        else:
            lo = mid + 1
    return lo

class Version:
    def __init__(self, num, bad_start):
        self.num = num
        self.bad_start = bad_start

    def is_bad(self):
        return self.num >= self.bad_start

    def __repr__(self):
        return f"v{self.num}"

if __name__ == "__main__":
    bad_start = 7
    versions = [Version(i, bad_start) for i in range(1, 11)]
    first_bad = find_first_bad(versions)
    print(f"First bad version index: {first_bad} -> {versions[first_bad]}")