def export_scalars(self, path):
if os.path.exists(path) and os.path.isfile(path):<EOL><INDENT>logging.warning('<STR_LIT>', path)<EOL><DEDENT>with open(path, "<STR_LIT:w>") as f:<EOL><INDENT>json.dump(self._scalar_dict, f)<EOL><DEDENT>
Exports to the given path an ASCII file containing all the scalars written
        so far by this instance, with the following format:
        {writer_id : [[timestamp, step, value], ...], ...}