aiohttp get_argement helpers

gistfile1.txt

from aiohttp import web

def get_qs_argument(request, *args, **kwargs):
    return _get_argument(request.GET, *args, **kwargs)


def get_url_argument(request, *args, **kwargs):
    return _get_argument(request.match_info, *args, **kwargs)


def _get_argument(container, name, default=None, *, cls=None):
    arg = container.get(name, default)
    if arg is None:
        raise web.HTTPBadRequest(
            reason='Missing required argument: {}'.format(name))
    if cls:
        try:
            arg = cls(arg)
        except Exception:
            raise web.HTTPBadRequest(
                reason='Argument is incorrect: {}'.format(name))
    return arg