title: getTotal() takes exactly 2 arguments (1 given)
body: <p>So, here is my Shoping Cart code, im stuck with this code, i fix one error, another pop out. So now i get TypeError: getTotal() takes exactly 2 arguments (1 given)</p>
  
  <pre><code>class Item():
  """Name and price of Item"""
      def __init__(self, name, price):
          self.name = name
          self.price = price
  
      def getName(self):            #Returning item's name
          return self.name
  
      def getPrice(self):           #Returning item's price.
          return self.price
  
  class User():
  """Getting name of user"""
      def __init__(self, name,budget):
          self.name = name
          self.budget = budget
  
      def userName(self):               #Returning user's name
          return self.name
  
      def userBudget(self):             #Returning user's budget
          return self.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,carta):
          self.carta.append(1)  #Adding item in cart.
  
      def getTotal(self,carta):  #Total bill.
          total = 0
          for item in carta:
              item = getPrice, getName
              total += item
          return total
  
      def numItems(self,carta):    #Number of items in cart.
          self.carta = carta.len()
          return len.carta()
  
  def 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 %i, your total bill is $%0.2f, and you have %i items in your cart.",uname.userName(), kart.getTotal(), kart.numItems())
  
  final = kart()
  print (final)
  </code></pre>
  
  <p>Output i get:</p>
  
  <pre><code>Traceback (most recent call last):
  File "C:\Users\Marko\Documents\Projects\Shopping.py", line 56, in &lt;module&gt;
  final = kart()
  File "C:\Users\Marko\Documents\Projects\Shopping.py", line 54, in kart
  print ("Hi %i, your total bill is $%0.2f, and you have %i items in your cart.",uname.userName(), kart.getTotal(), kart.numItems())
  TypeError: getTotal() takes exactly 2 arguments (1 given)
  </code></pre>
  
  <p>Every tip, every help is welcome, thanks,</p>