這裏是我的代碼:購物車。錯誤
print ("Welcome to our Shop")
class Item:
def __init__(self, name, price):
self.name = name
self.price = price
def getName(self): #Returning name of Item.
return self.name
def getPrice(self): #Returning price of Item.
return self.price
class Cart:
def __init__(self, list):
self.list = [] #List is Cart, you will store items in it.
def addItem(self, item):
self.item = list.append(self.list) #Adding item to Cart(List).
def getTotal(self): #Total price. Your bill.
total = 0
for item in self.list:
total += price
return total
def numItems(self): #Number of items in your cart.
items = 0
for item in self.list:
items += item
def kart():
item1 = Item("Xbox", 350)
item2 = Item("Controller", 50) #Items to buy.
item3 = Item("LED TV 55", 550)
k = Cart() #Calling Cart Class.
k.addItem(item1)
k.addItem(item2) #Adding Items.
k.addItem(item3)
print ("You have %i items in your cart for a total of %s $" %(k.numItems(), k.getTotal()))
korpa = kart()
我在最後得到錯誤。它說
Welcome to our ShoTraceback (most recent call last):
File "C:\Users\Marko\Documents\Projects\EbayCart.py", line 41, in <module>
p
korpa = kart()
File "C:\Users\Marko\Documents\Projects\EbayCart.py", line 35, in kart
k = Cart() #Calling Cart Class.
TypeError: __init__() takes exactly 2 arguments (1 given)
[Finished in 0.1s with exit code 1]
我讀
__init__() takes exactly 2 arguments (1 given)
職位,但它並沒有在我的情況有所幫助。 你有什麼想法是什麼問題? 我現在正在學習Classes,這就是這段代碼的目的。 感謝您的幫助。
看看你的'Cart .__ init__'。需要多少參數?二。你提供了多少個?只有一個(隱含的「自我」)。另外,'self.item = list.append(self.list)'看起來很奇怪,會導致另一個錯誤。更多的是,縮進在'Cart.getTotal'中關閉。最後,'Cart.numItems'返回'None',這不是你想要的。 – ForceBru
即你需要指定'list'。 – patrick