helper_functions.py

def occupies_teacher(schedule, slots, b, sub, teacher, d, t):

    # If this teacher does not teach this subject → no contribution
    if teacher not in sub["teachers"]:
        return 0

    duration = sub["duration"]
    terms = []

    for s in slots:
        if (b['name'], sub['name'], d, s) in schedule:
            if s <= t < s + duration:
                terms.append(schedule[b['name'], sub['name'], d, s])

    return sum(terms)

def getSubject(data, b, sub):
    for item in data:
        if item['name'] == b:
            for subjects in item['subjects']:
                if subjects['name'] == sub:
                    return subjects