def currency_converter():
args = Namespace(amount=request.args.get('amount'),
input_currency=request.args.get('input_currency'),
output_currency=request.args.get('output_currency'))
if not args.amount or not args.input_currency:
return error(GET_PARAM_ERR)
try:
amount = float(args.amount)
except ValueError:
return error(GET_PARAM_ERR)
if check_currency_args_validity(args) is False or amount < 0:
return error(GET_PARAM_ERR)
currency_from, currency_to = adjust_from_to_currency(
args.input_currency, args.output_currency)
exchange_rates = download_exchange_rates()
converted_currency = convert(amount, currency_from, currency_to,
exchange_rates)
return jsonify({
'input': {
'amount': amount,
'currency_from': currency_from
},
'output': converted_currency
})
def test_symbols_to_names(self):
input_currency, output_currency = adjust_from_to_currency('₩', '฿')
assert (input_currency, output_currency) == ('KRW', 'THB')
def test_name_and_symbol_to_names(self):
input_currency, output_currency = adjust_from_to_currency('EUR', '$')
assert (input_currency, output_currency) == ('EUR', 'USD')
def test_symbol_and_name_to_names(self):
input_currency, output_currency = adjust_from_to_currency('₪', 'CZK')
assert (input_currency, output_currency) == ('ILS', 'CZK')
# Author: Jakub Kubik
# Date: 10.03.2019
from functions.arguments import parse_arguments, check_currency_args_validity, adjust_from_to_currency
from functions.download import download_exchange_rates
from functions.conversion import convert
from sys import stderr
from json import dumps
if __name__ == '__main__':
args = parse_arguments()
if check_currency_args_validity(args) is False or args.amount < 0:
stderr.write('Wrong arguments!\n')
raise SystemExit(2)
amount = args.amount
currency_from, currency_to = adjust_from_to_currency(args.input_currency, args.output_currency)
exchange_rates = download_exchange_rates()
if exchange_rates is None:
stderr.write('Can\'t download today\'s currency rates!\n')
raise SystemExit(3)
converted_currency = convert(amount, currency_from, currency_to, exchange_rates)
print(
dumps({'input': {'amount': amount, 'currency': currency_from},
'output': converted_currency},
indent=4))