def find(self, path, all=False):
        """
        Only allow lookups for jspm_packages.

        # TODO: figure out the 'jspm_packages' dir from packag.json.
        """
        bits = path.split('/')
        dirs_to_serve = ['jspm_packages', settings.SYSTEMJS_OUTPUT_DIR]
        if not bits or dirs_to_serve not in bits[0]:
            return []
        return super(SystemFinder, self).find(path, all=all)
dataset/ETHPy150Open sergei-maertens/django-systemjs/systemjs/finders.py/SystemFinder.find/swapped operands of `not in`