從用戶請求的文本文件讀取和寫入

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我有一個代碼打開文本文件並詢問用戶是否要輸入gtin-8產品代碼。但是我找不到該產品的總成本。任何幫助將不勝感激！這是我的文本文件和代碼...從用戶請求的文本文件讀取和寫入

文本文件：

gtin8 name cost 
34512340 plain brackets £0.50 
56756777 100 mm bolts £0.20 
90673412 L-shaped brackets £1.20 
76842309 Screwdriver £3.00 
6 Radiator Key £4.00 
34267891 Panel Saw £12.00 
67532189 Junior Hacksaw £7.00 
98123470 Wrench £8.00 
18653217 Shovel £8.00 
67543891 Hammer £10.00 
23879462 File £7.00

我的代碼：

loop = True 
productsfile = open("Products.txt", "r+") 
recieptfile = open("Receipt.txt", "w") 
search = productsfile.readlines() 
while True: 
     yesno = input("Would you like to type in a gtin-8 product code?(yes/no)") 
     if yesno == "yes": 
      gtin8 = int(input("Please enter your GTIN-8 code: ")) 
      if len(gtin8) == 8: 
        while True: 
          for line in search: 
            if gtin8 in line: 
              productline = line 
              recieptfile = open("Receipt.txt", "w") 
              recieptfile.writelines("\n" + "+") 
              quantity = int(input("What is the quantity of the product you require? ")) 
              itemsplit = productline.split(",") 
              cost = float(itemsplit[3]) 
              totalcost = (cost)*(quantity) 
              recieptfile.writelines("Your total cost is: ", totalcost) 
      else: 
        print("Here is your reciept", "reciept.txt", "r")

來源

2016-11-23 Lewis Graham

'if len（gtin8）== 8：'不能正確，因爲gtin'是一個整數。 –

這個問題不是固定的，但它給了我一個錯誤，說這個...回溯（最近一次調用最後一次）：文件「N：\年10-11 \ Computing \ A453 \受控評估任務2 \受控評估Code.py 「，第17行，在 cost = float（itemsplit.split（」，「）） AttributeError：'list'對象沒有屬性'split' –

我搞掂你的腳本，使得它更具可讀性和清晰。基本上它會繼續要求產品，直到你不想再添加。它還檢查產品是否存在。它將產品和價格存儲在字典中。

recieptfile = open("Receipt.txt", "w") 
product_lines = open("Products.txt", "r").readlines() 
products = [i.split() for i in product_lines][1:] 
product_costs = dict() 
for i in products: 
    product_costs[i[0]] = float(i[-1][1:]) 

total_cost = 0 
first_item = True 
while True: 
    yesno = input("Would you like to type in a gtin-8 product code?(yes/no)") 
    if yesno == "yes": 
     gtin8 = input("Please enter your GTIN-8 code: ") 
     if gtin8 in product_costs: 
      quantity = int(input("What is the quantity of the product you require? ")) 
      price = product_costs[gtin8] 
      cost = price * quantity 

      if not first_item: 
       recieptfile.write("\t+\n") 
      recieptfile.write("{0}\t{1}".format(gtin8, cost)) 
      total_cost += cost 
      first_item = False 
     else: 
      print("Product not found") 
    else: 
     recieptfile.write("\nYour total cost is: {0}".format(total_cost)) 
     break 
recieptfile.close() 
with open('Receipt.txt', 'r') as recieptfile: 
    print("Here is your reciept:") 
    print(recieptfile.read())

來源

2016-11-23 15:56:53 Navidad20

感謝您的評論！有用！ –

感謝您的幫助！ –

從用戶請求的文本文件讀取和寫入

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