def extract_currency(self,amount):
#currency= accounts.rub
#cur_index=amount.find('RUB')
#if cur_index<0:
## cur_index=amount.find('USD')
# currency= accounts.usd
# if cur_index<0:
# cur_index=amount.find('EUR')
# currency= accounts.eur
# if cur_index<0:
# cur_index=amount.find('GBR')
# currency= accounts.gbr
# if cur_index<0:
# cur_index=amount.find('GBP')
# currency= accounts.gbr
# if cur_index<0:
# raise Exception("Unknown currency in "+amount)
currency, cur_index=Currency.str_to_currency_code(amount)
return currency, cur_index
