Solution

app/car.py

@@ -0,0 +1,7 @@
+class Car:
+    def __init__(self, brand: str, fuel_consumption: float) -> None:
+        self.brand = brand
+        self.fuel_consumption = fuel_consumption
+
+    def calculate_fuel_cost(self, distance: float, full_price: float) -> float:
+        return (self.fuel_consumption / 100) * distance * full_price

app/customer.py

@@ -0,0 +1,28 @@
+from app.car import Car
+from decimal import Decimal
+import math
+
+
+class Customer():
+    def __init__(
+            self,
+            name: str,
+            product_cart: dict[str, int],
+            location: list[int],
+            money: Decimal,
+            car: Car
+    ) -> None:
+        self.name = name
+        self.product_cart = product_cart
+        self.location = location
+        self.money = money
+        self.car = car
+
+    def distance(self, shop_location: list) -> float:
+        return math.sqrt(
+            (self.location[0] - shop_location[0]) ** 2
+            + (self.location[1] - shop_location[1]) ** 2)
+
+    def ride_home(self, spend_money: float) -> None:
+        print(f"{self.name} rides home")
+        print(f"{self.name} now has {self.money - spend_money} dollars\n")

app/main.py

@@ -1,3 +1,61 @@
-def shop_trip():
-    # write your code here
-    pass
+import json
+import os
+from app.customer import Customer
+from app.shop import Shop
+from app.car import Car
+
+
+def shop_trip() -> None:
+    config_path = os.path.join(os.path.dirname(__file__), "config.json")
+    with open(config_path, "r") as file:
+        data = json.load(file)
+    fuel_price, customers_, shops_ = data.values()
+
+    customers = []
+    for custom in customers_:
+        car = Car(**custom["car"])
+        customer = Customer(
+            name=custom["name"],
+            product_cart=custom["product_cart"],
+            location=custom["location"],
+            money=custom["money"],
+            car=car
+        )
+        customers.append(customer)
+
+    shops = []
+    for some_shop in shops_:
+        shop = Shop(
+            name=some_shop["name"],
+            location=some_shop["location"],
+            products=some_shop["products"]
+        )
+        shops.append(shop)
+
+    for customer in customers:
+        customer_money = customer.money
+        print(f"{customer.name} has {customer_money} dollars")
+        trip_cost_dict = {}
+        for shop in shops:
+            total = 0
+            dist_for_shop = customer.distance(shop.location)
+            fuel_for_shop = customer.car.calculate_fuel_cost(
+                dist_for_shop,
+                fuel_price
+            )
+            products_cost = shop.products_cost(customer)
+            total += round((products_cost + fuel_for_shop * 2), 2)
+            trip_cost_dict[total] = shop
+            print(f"{customer.name}'s trip to the {shop.name} costs {total}")
+        if customer.money < min(trip_cost_dict):
+            print(f"{customer.name} doesn't have enough"
+                  f" money to make a purchase in any shop")
+        else:
+            total = min(trip_cost_dict)
+            current_shop = trip_cost_dict[min(trip_cost_dict)]
+            print(f"{customer.name} rides to {current_shop.name}\n")
+            current_shop.print_check(customer)
+            customer.ride_home(total)
+
+
+shop_trip()

app/shop.py

@@ -0,0 +1,45 @@
+from app.customer import Customer
+from datetime import datetime
+
+
+class Shop:
+    def __init__(
+            self,
+            name: str,
+            location: list[int],
+            products: dict[str, float]
+    ) -> None:
+        self.name = name
+        self.location = location
+        self.products = products
+
+    def products_cost(self, customer: Customer) -> float:
+        product_cart = customer.product_cart
+        product_cost = 0
+        for product, qty in product_cart.items():
+            product_cost += qty * self.products.get(product)
+        return product_cost
+
+    def print_check(self, customer: Customer) -> None:
+        current_datatime = datetime(2021, 1, 4, 12, 33, 41)
+        current_datatime = current_datatime.strftime("%d/%m/%Y %H:%M:%S")
+        print(f"Date: {current_datatime}")
+        print(f"Thanks, {customer.name}, for your purchase!")
+        print("You have bought:")
+        milk = customer.product_cart.get("milk")
+        print(f"{milk} "
+              f"milks for "
+              f"{milk * self.products.get('milk')}"
+              f" dollars")
+        bread = customer.product_cart.get("bread")
+        print(f"{bread} "
+              f"breads for "
+              f"{round(bread * self.products.get('bread'))}"
+              f" dollars")
+        butter = customer.product_cart.get("butter")
+        print(f"{butter}"
+              f" butters for "
+              f"{butter * self.products.get('butter')}"
+              f" dollars")
+        print(f"Total cost is {self.products_cost(customer)} dollars")
+        print("See you again!\n")