Method __setitem__

awscli/botocore/utils.py:3973–3988

(self, cache_key, value)

            raise KeyError(cache_key)

    def __setitem__(self, cache_key, value):
        full_key = self._convert_cache_key(cache_key)
        try:
            file_content = self._dumps(value)
        except (TypeError, ValueError):
            raise ValueError(
                f"Value cannot be cached, must be "
                f"JSON serializable: {value}"
            )
        if not os.path.isdir(self._working_dir):
            os.makedirs(self._working_dir)
        with os.fdopen(
            os.open(full_key, os.O_WRONLY | os.O_CREAT, 0o600), 'w'
        ) as f:
            f.truncate()
            f.write(file_content)

    def _convert_cache_key(self, cache_key):
        full_path = os.path.join(self._working_dir, cache_key + '.json')