如何在文本文档中将变量设置为变量Python 3.4.6

Question

如何将我在文本文档中找到的一行设置为某个变量，以便我可以对其进行处理，如打印该行或分割该特定行。 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. ")