Simple getTicker for an specific book from bitso

bts.py

from requests import get

class Bitso(object):
	"""Bitso"""
	def __init__(self, version='v3'):
		super(Bitso, self).__init__()
		self.api = 'https://api.bitso.com/%s'%version
	'''
	  Valid books: btc_mxn, eth_mxn, xrp_btc, xrp_mxn, eth_btc, bch_btc 
	'''
	def getTicker(self, book=None):
		r = get('%s/ticker/'%self.api).json()
		if book:
			for b in r['payload']:
				if book == b['book']:
					return b
			raise Exception("Wrong book %s"%book)
		return r
	#Costo de un book
	def getLast(self,book):
		return self.getTicker(book)['last']

bitso = Bitso()

print bitso.getLast('eth_mxn')