# coding:utf-8
        # open a file
        # run read only one time

        f = open("demofile.txt", "r")
        #print(f.read())

        #Return the 5 first characters of the file:
        #print(f.read(5))

        # read the first line (one line)
        #print(f.readline())

        #loop
        for x in f:
            print(x)
        
        f.close()