solved task

app/car.py

@@ -0,0 +1,18 @@
+from dataclasses import dataclass
+
+from app.customer import Customer
+from app.shop import Shop
+
+
+@dataclass
+class Car:
+    brand: str
+    fuel_consumption: int | float
+
+    def litres_per_trip(
+            self,
+            shop: Shop,
+            customer: Customer
+    ) -> int | float:
+        distance = shop.calculate_trip_distance(customer)
+        return (self.fuel_consumption * distance) / 100

app/customer.py

@@ -0,0 +1,13 @@
+from __future__ import annotations
+from dataclasses import dataclass
+
+
+@dataclass
+class Customer:
+    name: str
+    product_cart: dict
+    location: list
+    money: int | float
+
+    def __str__(self) -> str:
+        return f"{self.name} has {self.money} dollars"

app/main.py

@@ -1,3 +1,50 @@
-def shop_trip():
-    # write your code here
-    pass
+import json
+
+from app.car import Car
+from app.customer import Customer
+from app.shop import Shop
+
+
+def shop_trip() -> None:
+    with open("app/config.json", "r") as config_file:
+        data = json.load(config_file)
+        customers = data["customers"]
+        shops = data["shops"]
+
+    for person in customers:
+        customer = Customer(
+            person["name"],
+            person["product_cart"],
+            person["location"],
+            person["money"],
+        )
+        car = Car(person["car"]["brand"], person["car"]["fuel_consumption"])
+        print(customer)
+
+        prices = {}
+        for shop in shops:
+            shop_inst = Shop(
+                shop["name"],
+                shop["location"],
+                shop["products"]
+            )
+            fuel_cost = (data["FUEL_PRICE"]
+                         * car.litres_per_trip(shop_inst, customer))
+            total = round(fuel_cost * 2 + shop_inst.shopping_cost(customer), 2)
+            prices[total] = shop_inst
+            print(f"{customer.name}'s trip to the {shop_inst.name} "
+                  f"costs {total}")
+
+        if customer.money >= min(prices):
+            cheapest_shop = prices[min(prices)]
+            print(f"{customer.name} rides to {cheapest_shop.name}")
+            customer.location = cheapest_shop.location
+            customer.money -= min(prices)
+            cheapest_shop.issue_receipt(customer)
+            print(
+                f"\n{customer.name} rides home"
+                f"\n{customer.name} now has {customer.money} dollars\n"
+            )
+        else:
+            print(f"{customer.name} doesn't have enough money "
+                  f"to make a purchase in any shop")

app/shop.py

@@ -0,0 +1,42 @@
+import datetime
+from dataclasses import dataclass
+from math import sqrt
+
+from app.customer import Customer
+
+
+@dataclass
+class Shop:
+    name: str
+    location: list
+    products: dict
+
+    def calculate_trip_distance(self, customer: Customer) -> int | float:
+        shop_pos_x = self.location[0]
+        shop_pos_y = self.location[1]
+        customer_pos_x = customer.location[0]
+        customer_pos_y = customer.location[1]
+        return sqrt(
+            (shop_pos_x - customer_pos_x) ** 2
+            + (shop_pos_y - customer_pos_y) ** 2
+        )
+
+    def shopping_cost(self, customer: Customer) -> int | float:
+        total_price = 0
+        for product, amount in customer.product_cart.items():
+            total_price += self.products.get(product) * amount
+        return total_price
+
+    def issue_receipt(self, customer: Customer) -> None:
+        date = datetime.datetime.now()
+        print(f'\nDate: {date.strftime("%d/%m/%Y %H:%M:%S")}\n'
+              f"Thanks, {customer.name}, for your purchase!\n"
+              f"You have bought:")
+        for product, count in customer.product_cart.items():
+            cost = self.products[product] * count
+            print(f"{count} {product}s for "
+                  f"{int(cost) if float(cost) == int(cost) else cost} dollars")
+        print(
+            f"Total cost is {self.shopping_cost(customer)} dollars\n"
+            f"See you again!"
+        )