question: How to customize the version or name of log file
context: v_num in progress bar means the version number of this running, and the log file's save directory is version_{v_num}.
  How can i customize the directory's name, such as version_GAT, version_GCN.
answer: you change it by passing your logger:
  from pytorch_lightning import Trainer
  from pytorch_lightning.loggers import TensorBoardLogger
  logger = TensorBoardLogger("tb_logs", name="my_model", version="GAT")
  trainer = Trainer(logger=logger)