old_contents: file = open('hi.txt','r')
  cont = file.read()
  print(cont)
  file.close()
  
new_contents: file = open('hi.txt','r')
  cont = file.read()
  print(cont)
  file.close()
  ##--------------##
  file = open('hi.txt','r')
  print(file.read(16))        ## This determines the number of bytes that should be read.
  print(file.read(4))         ## You can make more calls to read on the same file object to read more of the file byte by byte.
  print(file.read(4))         ## ## With no argument, read returns the rest of the file.
  print(file.read())
  file.close()
  
subject: Update read_file.py