Source code for woob.capabilities.bank.rate

# Copyright(C) 2010-2016 Romain Bignon
#
# This file is part of woob.
#
# woob is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# woob is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with woob. If not, see <http://www.gnu.org/licenses/>.

from decimal import Decimal

from woob.capabilities.base import BaseObject, Capability, Currency, DecimalField, StringField
from woob.capabilities.date import DateField


__all__ = [
    "Rate",
    "CapCurrencyRate",
]


[docs]class Rate(BaseObject, Currency): """ Currency exchange rate. """ currency_from = StringField("The currency to which exchange rates are relative to") currency_to = StringField("The currency is converted to") value = DecimalField("Exchange rate") datetime = DateField("Collection date and time") def __repr__(self): return "<{} from={!r} to={!r} value={!r}>".format( type(self).__name__, self.currency_from, self.currency_to, self.value, )
[docs] def convert(self, amount): if isinstance(amount, float): amount = Decimal(str(amount)) return amount * self.value
[docs]class CapCurrencyRate(Capability): """ Capability of bank websites to get currency exchange rates. """
[docs] def iter_currencies(self): """ Iter available currencies. :rtype: iter[:class:`Currency`] """ raise NotImplementedError()
[docs] def get_rate(self, currency_from, currency_to): """ Get exchange rate. :param currency_from: currency to which exchange rate is relative to :type currency_from: :class:`Currency` :param currency_to: currency is converted to :type currency_to: :class`Currency` :rtype: :class:`Rate` """ raise NotImplementedError()