old_contents: from halibot import HalModule
  from blockchain import exchangerates
  
  class BtcModule(HalModule):
  
  	def receive(self, msg):
  		coarse = msg.body.strip().split(' ')
  		args = list(filter( lambda x: len(x) > 0, coarse ))
  
  		if args[0] == '!btc':
  			curs = args[1:]
  			if len(curs) == 0:
  				curs = [ self.config.get('currency', 'USD') ]
  
  			# Simplistic rate limiting, TODO better rate limiting
  			limit = self.config.get('limit', -1)
  			if limit >= 0 and len(curs) > limit:
  				self.reply(msg, body="Currency queries are limited to {}.".format(limit))
  				return
  
  			# Actually get a return the values
  			ticker = exchangerates.get_ticker()
  			hit = {} # for not showing the same currency twice
  
  			for c in curs:
  				c = c.upper()
  				if not c in hit:
  					if c in ticker:
  						body = '1 BTC ~ {} {}'.format(ticker[c].p15min, c)
  					else:
  						body = 'Unknown currency: {}'.format(c)
  					hit[c] = True
  					self.reply(msg, body=body)
  
  
  
new_contents: from halibot import HalModule
  from blockchain import exchangerates
  
  class BtcModule(HalModule):
  
  	topics = {
  		'btc': '''Retrieve exchange rate for bitcoins.
  
  Usage:
    !btc [currency]'''
  	}
  
  	def receive(self, msg):
  		coarse = msg.body.strip().split(' ')
  		args = list(filter( lambda x: len(x) > 0, coarse ))
  
  		if args[0] == '!btc':
  			curs = args[1:]
  			if len(curs) == 0:
  				curs = [ self.config.get('currency', 'USD') ]
  
  			# Simplistic rate limiting, TODO better rate limiting
  			limit = self.config.get('limit', -1)
  			if limit >= 0 and len(curs) > limit:
  				self.reply(msg, body="Currency queries are limited to {}.".format(limit))
  				return
  
  			# Actually get a return the values
  			ticker = exchangerates.get_ticker()
  			hit = {} # for not showing the same currency twice
  
  			for c in curs:
  				c = c.upper()
  				if not c in hit:
  					if c in ticker:
  						body = '1 BTC ~ {} {}'.format(ticker[c].p15min, c)
  					else:
  						body = 'Unknown currency: {}'.format(c)
  					hit[c] = True
  					self.reply(msg, body=body)
  
  
  
subject: Add help text