old_contents: #!/usr/bin/env python
  
  import sys
  import json
  import struct
  import subprocess
  import shlex
  
  
  # Read a message from stdin and decode it.
  def getMessage():
      rawLength = sys.stdin.read(4)
      if len(rawLength) == 0:
          sys.exit(0)
      messageLength = struct.unpack('@I', rawLength)[0]
      message = sys.stdin.read(messageLength)
      return json.loads(message)
  
  
  # Encode a message for transmission,
  # given its content.
  def encodeMessage(messageContent):
      encodedContent = json.dumps(messageContent)
      encodedLength = struct.pack('@I', len(encodedContent))
      return {'length': encodedLength, 'content': encodedContent}
  
  
  # Send an encoded message to stdout
  def sendMessage(encodedMessage):
      sys.stdout.write(encodedMessage['length'])
      sys.stdout.write(encodedMessage['content'])
      sys.stdout.flush()
  
  
  while True:
      mpv_args = getMessage()
      if (len(mpv_args) > 1):
          args = shlex.split("mpv " + mpv_args)
          subprocess.call(args)
          sys.exit(0)
  
new_contents: #!/usr/bin/env python
  
  import sys
  import json
  import struct
  import subprocess
  import shlex
  
  
  def getMessage():
      rawLength = sys.stdin.read(4)
      if len(rawLength) == 0:
          sys.exit(0)
      messageLength = struct.unpack('@I', rawLength)[0]
      message = sys.stdin.read(messageLength)
      return json.loads(message)
  
  
  while True:
      mpv_args = getMessage()
      if len(mpv_args) > 1:
          args = shlex.split("mpv " + mpv_args)
          subprocess.call(args)
          sys.exit(0)
  
subject: Remove deadcode