old_contents: #!/usr/bin/env python
  from pg_chameleon import replica_engine
  commands=[
  						'create_schema',
  						'init_replica',
  						'start_replica', 
  						'upgrade_schema', 
  						'drop_schema'
  					]
  command_help='Available commands, '+','.join(commands)
  import argparse
  parser = argparse.ArgumentParser(description='Command line for pg_chameleon.')
  parser.add_argument('command', metavar='command', type=str,  help=command_help)
  args = parser.parse_args()
  
  if args.command in commands:
  	replica=replica_engine(args.command)
  	if args.command == commands[0]:
  		replica.create_service_schema()
  	elif args.command == commands[1]:
  		replica.create_schema(drop_tables=True)
  		replica.copy_table_data()
  		replica.create_indices()
  	elif args.command == commands[2]:
  		replica.run_replica()
  	elif args.command == commands[3]:
  		replica.upgrade_service_schema()
  	elif args.command == commands[4]:
  		replica.drop_service_schema()
  else:
  	print command_help
  
new_contents: #!/usr/bin/env python
  import argparse
  from pg_chameleon import replica_engine
  commands = [
  					'create_schema',
  					'init_replica',
  					'start_replica',
  					'upgrade_schema',
  					'drop_schema'
  	]
  command_help = 'Available commands, ' + ','.join(commands)
  
  parser = argparse.ArgumentParser(description='Command line for pg_chameleon.')
  parser.add_argument('command', metavar='command', type=str, help=command_help)
  args = parser.parse_args()
  
  if args.command in commands:
  	replica = replica_engine(args.command)
  	if args.command == commands[0]:
  		replica.create_service_schema()
  	elif args.command == commands[1]:
  		replica.create_schema(drop_tables=True)
  		replica.copy_table_data()
  		replica.create_indices()
  	elif args.command == commands[2]:
  		replica.run_replica()
  	elif args.command == commands[3]:
  		replica.upgrade_service_schema()
  	elif args.command == commands[4]:
  		replica.drop_service_schema()
  else:
  	print command_help
  
subject: fix code style issues