如何在文本文檔中將變量設置爲變量Python 3.4.6

Question

如何將我在文本文檔中找到的一行設置爲某個變量，以便我可以對其進行處理，如打印該行或分割該特定行。 python 3.4.6

Answer 1

recfile = open('/home/pi/Desktop/Recipt.txt', "a") 
barfile = open('/home/pi/Desktop/Barcodes.txt').read() 

if barcode in barfile: 
    print("Your product has been found. ") 
    while barcode in barfile: 
     amount = input("How many do you want? ") 
     print(barfile) 

else: 
    print("Your product was not found on our systems. ")