def _open(self, name, mode='rb'):
        name = self._normalize_name(self._clean_name(name))
        f = self.file_class(name, mode, self)
        if not f.key:
            raise IOError('File does not exist: %s' % name)
        return f
dataset/ETHPy150Open jschneier/django-storages/storages/backends/s3boto.py/S3BotoStorage._open/original