primeiro commit com exercicios de Exercism realizados até esta data

python/mecha-munch-management/dict_methods.py

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+"""Functions to manage a users shopping cart items."""
+
+from re import fullmatch
+
+
+def add_item(current_cart, items_to_add):
+    """Add items to shopping cart.
+
+    :param current_cart: dict - the current shopping cart.
+    :param items_to_add: iterable - items to add to the cart.
+    :return: dict - the updated user cart dictionary.
+    """
+    # create a new cart with items_to_add if current_cart is empty
+    # if current_cart == {}:
+    #     current_cart = dict.fromkeys(items_to_add, 0)
+    #     for item in items_to_add:
+    #         current_cart[item] += 1
+    #     return current_cart
+
+    # (after doing this i realized that the bellow code also addresses the
+    # concern of the current_cart being empty, so i commented out the code
+    # above)
+
+    # increment item by one if item already exists in current_cart,
+    # otherwise add new item to current_cart with value of 1
+    for item in items_to_add:
+        current_cart[item] = current_cart.get(item, 0) + 1
+    return current_cart
+
+
+def read_notes(notes):
+    """Create user cart from an iterable notes entry.
+
+    :param notes: iterable of items to add to cart.
+    :return: dict - a user shopping cart dictionary.
+    """
+    shopping_cart: dict = dict.fromkeys(notes, 0)
+    for item in notes:
+        shopping_cart[item] += 1
+    return shopping_cart
+
+
+def update_recipes(ideas, recipe_updates):
+    """Update the recipe ideas dictionary.
+
+    :param ideas: dict - The "recipe ideas" dict.
+    :param recipe_updates: dict - dictionary with updates for the ideas section.
+    :return: dict - updated "recipe ideas" dict.
+    """
+    ideas |= recipe_updates
+    return ideas
+
+
+def sort_entries(cart):
+    """Sort a users shopping cart in alphabetically order.
+
+    :param cart: dict - a users shopping cart dictionary.
+    :return: dict - users shopping cart sorted in alphabetical order.
+    """
+    sorted_cart: dict = dict(sorted(cart.items()))
+    return sorted_cart
+
+
+def send_to_store(cart, aisle_mapping):
+    """Combine users order to aisle and refrigeration information.
+
+    :param cart: dict - users shopping cart dictionary.
+    :param aisle_mapping: dict - aisle and refrigeration information dictionary.
+    :return: dict - fulfillment dictionary ready to send to store.
+    """
+    fulfillment: dict[str, list] = {}
+    for item in cart:
+        fulfillment[item] = [cart[item],
+                             aisle_mapping[item][0], aisle_mapping[item][1]]
+    fulfillment = dict(sorted(fulfillment.items(), reverse=True))
+    return fulfillment
+
+
+def update_store_inventory(fulfillment_cart, store_inventory):
+    """Update store inventory levels with user order.
+
+    :param fulfillment cart: dict - fulfillment cart to send to store.
+    :param store_inventory: dict - store available inventory
+    :return: dict - store_inventory updated.
+    """
+    for item in fulfillment_cart:
+        new_stock = store_inventory[item][0] - fulfillment_cart[item][0]
+        store_inventory[item] = [
+            "Out of Stock" if new_stock <= 0 else new_stock,
+            store_inventory[item][1],
+            store_inventory[item][2],
+        ]
+    return store_inventory