Mobile Operator

year = input()
type = input()
net = input()
month = int(input())
price = 0

if type == "Small":
    if year == "one":
        price = 9.98
    else:
        price = 8.58
elif type == "Middle":
    if year == "one":
        price = 18.99
    else:
        price = 17.09
elif type == "Large":
    if year == "one":
        price = 25.98
    else:
        price = 23.59
elif type == "ExtraLarge":
    if year == "one":
        price = 35.99
    else:
        price = 31.79

if net == "yes":
    if price <= 10:
        price += 5.50
    elif 10 < price <= 30:
        price += 4.35
    else:
        price += 3.85

total = price * month

if year == "two":
    total -= 3.75 * total / 100

print(f"{total:.2f} lv.")

Решение с тернарен оператор:

year = input()
type = input()
net = input()
months = int(input())

price = \
    (9.98 if year == "one" else 8.58) if type == "Small" else \
        (18.99 if year == "one" else 17.09) if type == "Middle" else \
            (25.98 if year == "one" else 23.59) if type == "Large" else \
                (35.99 if year == "one" else 31.79) if type == "ExtraLarge" else 0

price += (5.50 if price <= 10 else 4.35 if 10 < price <= 30 else 3.85) if net == "yes" else 0

total = price * months * (0.9625 if year == "two" else 1)

print(f"{total:.2f} lv.")

Решение с колекция и тернарен оператор:

year = input()
type = input()
net = input()
months = int(input())

price = {
    "Small": {"one": 9.98, "two": 8.58},
    "Middle": {"one": 18.99, "two": 17.09},
    "Large": {"one": 25.98, "two": 23.59},
    "ExtraLarge": {"one": 35.99, "two": 31.79}
}[type][year]

total = (price + ((5.50 if sum <= 10 else 3.85 if price > 30 else 4.35) if net == "yes" else 0)) * months

print(f"{total * (0.9625 if year == 'two' else 1):.2f} lv.")