a bit like knights... test passed

app/car.py

@@ -0,0 +1,7 @@
+from dataclasses import dataclass
+
+
+@dataclass
+class Car:
+    brand: str
+    fuel_consumption: float

app/customer.py

@@ -0,0 +1,52 @@
+import math
+from decimal import Decimal
+
+from app.car import Car
+from app.shop import Shop
+
+
+class Customer:
+    group_customers: list["Customer"] = []
+
+    def __init__(
+        self, **data
+    ) -> None:
+        self.name = data.get("name")
+        self.product_cart = data.get("product_cart")
+        self.location = data.get("location")
+        self.money = Decimal(data.get("money"))
+        self.car = Car(
+            data.get("car").get("brand"),
+            data.get("car").get("fuel_consumption"))
+
+    def calculate_cost(self, shop: Shop, data: dict) -> Decimal:
+        x_coordinate, y_coordinate = self.location
+        x1_coordinate, y1_coordinate = shop.location
+        distance = Decimal(math.sqrt(
+            ((x1_coordinate - x_coordinate) ** 2)
+            + ((y1_coordinate - y_coordinate) ** 2)
+        ))
+
+        car_cost_there_and_back = (
+            (
+                (Decimal(self.car.fuel_consumption) * distance) / Decimal(100)
+            )
+            * Decimal(data["FUEL_PRICE"]) * 2
+        )
+        products_sum_price = Decimal(0)
+        for product, count in self.product_cart.items():
+            products_sum_price += Decimal(
+                shop.products.get(product, 0)
+            ) * count
+
+        return round((car_cost_there_and_back + products_sum_price), 2)
+
+    @classmethod
+    def generate_unit(cls, data: dict) -> None:
+        for unit in data["customers"]:
+            customer = Customer(**unit)
+            cls.group_customers.append(customer)
+
+
+class NotEnoughMoneyException(Exception):
+    """Custom exception for cases when customer doesn't have enough money"""

app/main.py

@@ -1,3 +1,44 @@
-def shop_trip():
-    # write your code here
-    pass
+import json
+
+from app.customer import Customer
+from app.shop import Shop
+
+
+def shop_trip() -> None:
+    with open("app/config.json", "r") as file:
+        data = json.load(file)
+
+    Customer.generate_unit(data)
+    Shop.generate_shop(data)
+
+    for customer in Customer.group_customers:
+        print(f"{customer.name} has {customer.money} dollars")
+
+        best_shop, trip_cost = None, float("inf")
+
+        for shop in Shop.shop_list:
+            trip_calculate = customer.calculate_cost(shop, data)
+            if trip_calculate < trip_cost:
+                trip_cost = trip_calculate
+                best_shop = shop
+
+            print(f"{customer.name}'s trip to the {shop.name} "
+                  f"costs {trip_calculate}")
+
+        money_change = customer.money - trip_cost
+        if money_change < 0:
+            print(f"{customer.name} doesn't have enough money "
+                  f"to make a purchase in any shop"
+                  )
+            return
+
+        print(f"{customer.name} rides to {best_shop.name}")
+
+        best_shop.get_service(customer)
+
+        print(f"{customer.name} rides home")
+        print(f"{customer.name} now has {round(money_change, 2)} dollars\n")
+
+
+if __name__ == "__main__":
+    shop_trip()

app/shop.py

@@ -0,0 +1,45 @@
+import datetime
+
+
+class Shop:
+    shop_list: list["Shop"] = []
+
+    def __init__(self, **data) -> None:
+        self.name = data.get("name")
+        self.location = data.get("location")
+        self.products = data.get("products")
+
+    @classmethod
+    def generate_shop(cls, data: dict) -> None:
+        for shop in data["shops"]:
+            store = Shop(**shop)
+            cls.shop_list.append(store)
+
+    def get_service(self, customer: any) -> float:
+        now = datetime.datetime.now().strftime("%d/%m/%Y %H:%M:%S")
+
+        products_sum_price = 0
+        sales_details = []
+        for product, count in customer.product_cart.items():
+            price = self.products.get(product)
+            total_product_cost = price * count
+            products_sum_price += total_product_cost
+
+            sales_details.append(
+                f"{count} {product}s "
+                f"for {self.format_amount(total_product_cost)} dollars")
+
+        print(f"\nDate: {now}")
+        print(f"Thanks, {customer.name}, for your purchase!")
+        print("You have bought:")
+        for detail in sales_details:
+            print(f"{detail}")
+        print(f"Total cost is {round(products_sum_price, 2)} dollars")
+        print("See you again!\n")
+        return products_sum_price
+
+    @staticmethod
+    def format_amount(amount: float) -> str:
+        amount_str = "{:.2f}".format(amount).rstrip("0").rstrip(".")
+
+        return amount_str