Question2.md

title	Calculate Total Billing Amount

Problem Statement

You are given a dictionary price_list where the keys are product IDs (strings) and the values are the prices of the corresponding products (integers). You are also given a dictionary order where the keys are product IDs (strings) and the values are the quantities of the corresponding products (integers).

Write a function calculate_total that takes these two dictionaries as input and returns the total bill amount by summing up the product of the price and quantity for all items in the order.

If a product ID in order is not found in price_list, its price should be considered as 0.

Example

price_list = {'p1': 100, 'p2': 200, 'p3': 150} order = {'p1': 2, 'p3': 1, 'p4': 3} calculate_total(price_list, order)
# Output:
# 350
In this example, `p1` contributes 200 (2 x 100), `p3` contributes 150 (1 x 150), and `p4` contributes 0 (not in price_list).

Solution

<template>
def calculate_total(price_list: dict, order: dict) -> int:
    '''
    Given the price list and order details, calculate the total billing amount.

    Arguments:
    price_list: dict - A dictionary where keys are product IDs and values are prices.
    order: dict - A dictionary where keys are product IDs and values are quantities.

    Return: int - Total bill amount.
    '''
    <sol>
    total = 0
    for product_id, quantity in order.items():
        price = price_list.get(product_id, 0)
        total += price * quantity
    return total
    </sol>
</template>
<suffix_invisible>
{% include '../function_type_and_modify_check_suffix.py.jinja' %}
</suffix_invisible>

Public Test Cases

Input 1

price_list = {'p1': 50, 'p2': 30, 'p3': 20}
order = {'p1': 3, 'p2': 4}
is_equal(
    calculate_total(price_list, order),
    290
)

Output 1

290

Input 2

price_list = {'a': 10, 'b': 20}
order = {'a': 1, 'c': 2}
is_equal(
    calculate_total(price_list, order),
    10
)

Output 2

10

Private Test Cases

Input 1

price_list = {'x': 100, 'y': 200, 'z': 300}
order = {'x': 1, 'y': 2, 'z': 1}
is_equal(
    calculate_total(price_list, order),
    800
)

price_list = {'p1': 45, 'p2': 60, 'p3': 70}
order = {'p2': 5, 'p3': 2}
is_equal(
    calculate_total(price_list, order),
    430
)

price_list = {'a': 10}
order = {'b': 3}
is_equal(
    calculate_total(price_list, order),
    0
)

Output 1

800
430
0