solution

app/car.py

@@ -0,0 +1,4 @@
+class Car:
+    def __init__(self, brand: str, fuel_consumption: float) -> None:
+        self.brand = brand
+        self.fuel_consumption = fuel_consumption

app/customer.py

@@ -0,0 +1,41 @@
+from app.car import Car
+import math
+
+
+class Customer:
+    def __init__(
+            self,
+            name: str,
+            location: list[int, int],
+            products: dict,
+            money: float,
+            car: Car,
+    ) -> None:
+        self.name = name
+        self.location = location
+        self.products = products
+        self.money = money
+        self.car = car
+
+    def cost_trip(
+            self,
+            location: list[int, int],
+            fuel_pice: float
+    ) -> float:
+        distance = math.sqrt(
+            (self.location[0] - location[0]) ** 2
+            + (self.location[1] - location[1]) ** 2
+        )
+        cost = round(
+            (distance / 100 * self.car.fuel_consumption * fuel_pice * 2), 2
+        )
+        return cost
+
+    def cost_product(
+            self,
+            products: dict
+    ) -> float:
+        cost = 0
+        for product in products:
+            cost += self.products[product] * products[product]
+        return round(cost, 2)

app/main.py

@@ -1,3 +1,91 @@
-def shop_trip():
-    # write your code here
-    pass
+from app.car import Car
+from app.customer import Customer
+from app.shop import Shop
+from datetime import datetime
+import json
+
+
+def shop_trip() -> None:
+    config = {}
+    with open("app/config.json", "r") as file:
+        config = json.load(file)
+    fuel_price = config["FUEL_PRICE"]
+    customers = config["customers"]
+    shops = config["shops"]
+
+    for customer in customers:
+        car = Car(
+            brand=customer["car"]["brand"],
+            fuel_consumption=customer["car"]["fuel_consumption"]
+        )
+        customer_instance = Customer(
+            name=customer["name"],
+            location=customer["location"],
+            products=customer["product_cart"],
+            money=customer["money"],
+            car=car
+        )
+        print(
+            f"{customer_instance.name} has "
+            f"{customer_instance.money} dollars"
+        )
+        min_cost = customer_instance.money
+        cheapest_shop = Shop(
+            name=shops[0]["name"],
+            location=shops[0]["location"],
+            products=shops[0]["products"]
+        )
+        for shop in shops:
+            shop_instance = Shop(
+                name=shop["name"],
+                location=shop["location"],
+                products=shop["products"]
+            )
+            cost = customer_instance.cost_trip(
+                location=shop_instance.location,
+                fuel_pice=fuel_price
+            ) + customer_instance.cost_product(
+                products=shop_instance.products
+            )
+            print(
+                f"{customer_instance.name}'s trip "
+                f"to the {shop_instance.name} costs {cost}"
+            )
+            if min_cost > cost:
+                min_cost = cost
+                cheapest_shop = shop_instance
+        if min_cost < customer_instance.money:
+            print(f"{customer_instance.name} rides to {cheapest_shop.name}")
+            print()
+            current_datetime = datetime(2021, 1, 4, 12, 33, 41)
+            current_datetime = current_datetime.strftime("%d/%m/%Y %H:%M:%S")
+            print(f"Date: {current_datetime}")
+            print(f"Thanks, {customer_instance.name}, for your purchase!")
+            print("You have bought:")
+            cost_products = 0
+            for product in customer_instance.products:
+                cost_any_product = (
+                    customer_instance.products[product]
+                    * cheapest_shop.products[product]
+                )
+                if (cost_any_product * 10) % 10 == 0:
+                    cost_any_product = int(cost_any_product)
+                print(
+                    f"{customer_instance.products[product]} {product}s "
+                    f"for {cost_any_product} dollars"
+                )
+                cost_products += cost_any_product
+            print(f"Total cost is {cost_products} dollars")
+            print("See you again!")
+            print()
+            print(f"{customer_instance.name} rides home")
+            print(
+                f"{customer_instance.name} now has "
+                f"{customer_instance.money - min_cost} dollars"
+            )
+            print()
+        else:
+            print(
+                f"{customer_instance.name} doesn't have"
+                f" enough money to make a purchase in any shop"
+            )

app/shop.py

@@ -0,0 +1,10 @@
+class Shop:
+    def __init__(
+            self,
+            name: str,
+            location: list[int, int],
+            products: dict
+    ) -> None:
+        self.name = name
+        self.location = location
+        self.products = products