# 
# file: read-from-file_lists.py
# This program opens a file "numbers.dat", reads all the information from it
# and displays it on the screen.
# !!! Please, note the the input file "numbers.dat" should be stored in the
#     same place your program is.
#
# The program uses readlines() function

def main():
    in_stream=open("numbers.dat","r")
    list_of_strings=in_stream.readlines() # list_of_strings is a list of strings,
    # each element of that list refers to corresponding string in the file "numbers.dat"

    n=len(list_of_strings) # how many elements in the list 'list_of_strings'
    
    print "The contents of the file %s is:" % ("numbers.dat")
    # printing out all elements of the list 'list_of_strings' one by one.
    # we keep in mind that all the strings except the last one have
    # newline character at the end, and we don't want to display it
    for i in range(n):
        if i!=n-1:
            print list_of_strings[0][:-1] # makes sure that the newline
            # character is not displayed on the screen
        else:
            print list_of_strings[1]

    print "And this is how the list of strings is looks like:"
    print list_of_strings

main()