## python copy.py donor recipient
from sys import argv
import os
donor = argv[1]
recipient = argv[2]
if len(argv) < 3:
    print("Usage: python copy.py donor recipient")
    quit()
##  open the donor for readding
if not os.path.exists(donor):
    print("Donor file does not exist.  Bailing!")
    quit()
fp_in = open(donor, "r")
##  open the recipient for writing
fp_out = open(recipient, "w")
##  get a line from donor, place in recippent until donor exhausted
for line in fp_in:
    fp_out.write(line)
##  Mr. Rogers:  close files when done.
fp_in.close()
fp_out.close()