#------------------------------------------------------------------------------
#  File2.py
#------------------------------------------------------------------------------


# main() ----------------------------------------------------------------------
def main():

   # read all lines into a list
   f = open('Matrix.py')  # default mode is 'r'
   L = f.readlines()
   f.close()

   # print the list
   print()
   print(L)
   print()
   # L.sort()

   # print to a back-up file
   g = open('Matrix.py.bak', 'w')
   for line in L:
      g.write(line)   # note that write() does not insert a newline
   # end for
   g.close()

   # another way to print to a file
   g = open('Matrix.py-2.bak', 'w') # re-use the file variable g
   for line in L:
      print(line, end='', file=g)  # print() does insert a newline, supress it
   # end for
   g.close()

# end main() ------------------------------------------------------------------

# -----------------------------------------------------------------------------
if __name__=='__main__':

   main()

# end if ----------------------------------------------------------------------