Returns a dictionay indexed by values {value_k:key_k}
	Parameters:
	-----------
		d : dictionary

def inverseDict(d):
	"""
	Returns a dictionay indexed by values {value_k:key_k}
	Parameters:
	-----------
		d : dictionary
	"""
	dt={}
	for k,v in list(d.items()):
		if type(v) in (list,tuple):
			for i in v:
				dt[i]=k
		else:
			dt[v]=k
	return dt