old_contents: #!/usr/bin/env python
  
  import sys
  from os import system
  
  class NginxCtl(object):
    """
    Nginx control operations abstraction
    """
  
    def __init__(self,
                 pid_file_path = "logs/nginx.pid",
                 bin_file_path = "sbin/nginx"):
      """
      Arguments:
      
      pid_file_path: Nginx pid file path
      bin_file_path: Nginx bin file path
      """
      self._pid_file_path = pid_file_path
      self._bin_file_path = bin_file_path
      
    def run(self, command):
      """
      Runs the command
      """
      cmd2run = ""
      
      if command == "start":
        cmd2run = "sudo %s" % self._bin_file_path
      elif command == "restart":
        cmd2run = self.signal_command("HUP")
      elif command == "stop":
        cmd2run = self.signal_command("QUIT")
      elif command == "force-stop":
        cmd2run = self.signal_command("INT")
      elif command == "reopen-log":
        cmd2run = self.signal_command("USR1")
      elif command == "upgrade-executable":
        cmd2run = self.signal_command("USR2")
      elif command == None:
        self.quit("Commands are start, restart, stop, force-stop, reopen-log, upgrade-executable")
      else:
        self.quit("Unknown command %s" % command)
      
      print "Executing %s" % cmd2run
      system(cmd2run)
  
    def quit(self, message):
       """
       Prints a message and exits
       """
       print(message)
       sys.exit()
  
    def signal_command(self, signal):
       """
       Returns shell command used to send some signal
       to Nginx master process.
       """
       return "sudo kill -s %s %s" % (signal, self.find_pid())
  
    def find_pid(self):
      """
      Returns Nginx pid
      """
      pidfile = open(self._pid_file_path)
      pid     = pidfile.read().strip()
      pidfile.close()
  
      return pid
  
  
  ctl = NginxCtl(pid_file_path = "/usr/local/nginx/logs/nginx.pid",
                 bin_file_path = "/usr/local/nginx/sbin/nginx")
  
  try:
    command = sys.argv[1]
  except:
    command = None
  
  ctl.run(command) 
  
new_contents: #!/usr/bin/env python
  
  import sys
  from os import system
  
  class NginxCtl(object):
    """
    Nginx control operations abstraction
    """
  
    def __init__(self,
                 pid_file_path = "logs/nginx.pid",
                 bin_file_path = "sbin/nginx"):
      """
      Arguments:
      
      pid_file_path: Nginx pid file path
      bin_file_path: Nginx bin file path
      """
      self._pid_file_path = pid_file_path
      self._bin_file_path = bin_file_path
      
    def run(self, command):
      """
      Runs the command
      """
      cmd2run = ""
      
      if command == "start":
        cmd2run = "sudo %s" % self._bin_file_path
      elif command == "reload":
        cmd2run = self.signal_command("HUP")
      elif command == "stop":
        cmd2run = self.signal_command("QUIT")
      elif command == "force-stop":
        cmd2run = self.signal_command("INT")
      elif command == "reopen-log":
        cmd2run = self.signal_command("USR1")
      elif command == "upgrade-executable":
        cmd2run = self.signal_command("USR2")
      elif command == None:
        self.quit("Commands are start, reload, stop, force-stop, reopen-log, upgrade-executable")
      else:
        self.quit("Unknown command %s" % command)
      
      print "Executing %s" % cmd2run
      system(cmd2run)
  
    def quit(self, message):
       """
       Prints a message and exits
       """
       print(message)
       sys.exit()
  
    def signal_command(self, signal):
       """
       Returns shell command used to send some signal
       to Nginx master process.
       """
       return "sudo kill -s %s %s" % (signal, self.find_pid())
  
    def find_pid(self):
      """
      Returns Nginx pid
      """
      pidfile = open(self._pid_file_path)
      pid     = pidfile.read().strip()
      pidfile.close()
  
      return pid
  
  
  ctl = NginxCtl(pid_file_path = "/usr/local/nginx/logs/nginx.pid",
                 bin_file_path = "/usr/local/nginx/sbin/nginx")
  
  try:
    command = sys.argv[1]
  except:
    command = None
  
  ctl.run(command) 
  
subject: Rename restart command to reload because this is what Nginx really does.