open_university_degrees.py

# https://help.open.ac.uk/documents/policies/working-out-your-class-of-honours/files/50/honours-class-working-out.pdf
# Only 2nd and 3rd year courses count.

# Course, credits, grade, year
courses = [
        ["M343", 30, "Distinction", 3],
        ["M249", 30, "Distinction", 2],
        ["M248", 30, "Distinction", 2],
        ["MST210", 60, "Grade 2 Pass", 2]
    ]
speculative = [
        ["M346", 30, "Distinction", 3],
        ["M347", 30, "Grade 2 Pass", 3],
        ["M373", 30, "Grade 2 Pass", 3],
    ]
data = courses + speculative

def is_first(data) :
    return is_light_weight(data) and qa(data)


def is_light_weight(data: list):
    FIRST_WEIGHT = 630
    second = score_year(data, 2)
    # weighted twice as much as 2nd year
    third = 2 * score_year(data, 3)
    print(second + third)
    return (second + third) <= FIRST_WEIGHT

def score_year(data, year):
    dat = [x for x in data if x[3] == year]
    ones = [x[1] for x in dat if x[2] == "Distinction"]
    twos = [x[1] for x in dat if x[2] == "Grade 2 Pass"]
    threes = [x[1] for x in dat if x[2] == "Pass"]
    return sum(ones * 1 \
        + twos * 2 \
        + threes * 3)

# check that your best 60 credits from third level is as good as weighted-credit class.
def qa(data):
    distincts = [x for x in data if x[2] == "Distinction" and x[3] == 3]
    return sum([x[1] for x in distincts]) >= 60


class CreditThreshold(Enum):
    FIRST_THRESHOLD = 630
    UPPER_SECOND_THRESHOLD = 900
    LOWER_SECOND_THRESHOLD = 1170
    THIRD_THRESHOLD = 1440

is_first(data)