[Solved] getTotal() takes exactly 2 arguments (1 given) [closed]

Question

There a several errors in your classes.

First, in Python, you can ger rid of getXXX() methods, especially in your case. So, you can redefine Item and User classes as:

class Item():
    """Name and price of Item"""
    def __init__(self, name, price):
        self.name = name
        self.price = price

class User():
    """Getting name of user"""
    def __init__(self, name,budget):
        self.name = name
        self.budget = budget

In the Cart class, that code does not what you want:

def addItem(self,carta):
    self.carta.append(1)  #Adding item in cart.

It will append the integer 1 into the current cart. To do as you would, take into account the current item to add:

def addItem(self, item):
    self.carta.append(item)

Next, getTotal cannot work as it is:

def getTotal(self, carta):  # carta is not needed
    total = 0
    for item in carta:  # work with the current carta, so use self.carta
        item = getPrice, getName  # I guess you want to retrieve the item's price, so use item.price
        total += item
    return total

Finally, numItems cannot work too (!). If you want to find the carta length (as carta is a list), do that:

def numItems(self):    #Number of items in cart.
    return len(self.carta)

Final code with fixes and a right print statement:

class Item():
    """Name and price of Item"""
    def __init__(self, name, price):
        self.name = name
        self.price = price

class User():
    """Getting name of user"""
    def __init__(self, name,budget):
        self.name = name
        self.budget = budget

class Cart():
    """Creating a cart, you can add item in cart and remove it, also u can se your total bill."""

    def __init__(self):
        self.carta = []   #Carta is shopping cart.

    def addItem(self, item):
        self.carta.append(item)  #Adding item in cart.

    def getTotal(self):  #Total bill.
        total = 0
        for item in self.carta:
            total += item.price
        return total

    def numItems(self):    #Number of items in cart.
        return len(self.carta)

def test_kart():
    item1 = Item ("Iphone", 500)
    item2 = Item ("Samsung", 200)
    item3 = Item("Huawei", 400)
    uname = User("Marko", 2000)
    kart = Cart()
    kart.addItem(item1)
    kart.addItem(item2)
    kart.addItem(item3)
    print('Hi %s, your total bill is $%0.2f, and you have %i items in your cart.' % (uname.name, kart.getTotal(), kart.numItems()))

test_kart()

We can do a lot more pythonic, but it seems you are learning Python, so try to understand that snippet correctly and then try to optimize, if wanted and needed. And read that tutorial 🙂

Accepted Answer