code: def log(channel, rest):
  	
  	words = [s.lower() for s in rest.split()]
  	if 'please' not in words:
  		return
  	include = 'stop' not in rest
  	existing = set(pmxbot.config.log_channels)
  	# add the channel if include, otherwise remove the channel
  	op = existing.union if include else existing.difference
  	pmxbot.config.log_channels = list(op([channel]))
docs: Enable or disable logging for a channel;
  	use 'please' to start logging and 'stop please' to stop.