Breaks in Colab

[neverix]

Environment

Colab

• OS: [Ubuntu 18.04]
• Hardware (GPU, or instance type): [T4, not Pro]

To reproduce

Steps to reproduce the behavior:

1. Install mosaicml in Colab
2. Create a Trainer with any model

Expected behavior

Constructing a Trainer does not produce an UnsupportedOperation error.

Currently, it errors out like this:

[/usr/local/lib/python3.7/dist-packages/composer/core/engine.py](https://localhost:8080/#) in _run_callbacks(self, event)
    372             with ctx:
    373                 self._debug_log(event, f'Running callback {type(cb).__name__}')
--> 374                 cb.run_event(event, self.state, self.logger)
    375 
    376     def __del__(self):

[/usr/local/lib/python3.7/dist-packages/composer/core/callback.py](https://localhost:8080/#) in run_event(self, event, state, logger)
     94         """
     95         event_cb = getattr(self, event.value)
---> 96         return event_cb(state, logger)
     97 
     98     def init(self, state: State, logger: Logger) -> None:

[/usr/local/lib/python3.7/dist-packages/composer/loggers/progress_bar_logger.py](https://localhost:8080/#) in init(***failed resolving arguments***)
    283             keys_to_log=[],
    284             bar_format='{bar:-1b}',
--> 285             timestamp_key='',
    286         )
    287 

[/usr/local/lib/python3.7/dist-packages/composer/loggers/progress_bar_logger.py](https://localhost:8080/#) in __init__(self, total, position, bar_format, file, metrics, keys_to_log, timestamp_key, unit)
     41         self.timestamp_key = timestamp_key
     42         self.file = file
---> 43         is_atty = os.isatty(self.file.fileno())
     44         self.pbar = tqdm.auto.tqdm(
     45             total=total,

Additional context

This seems to only be an issue in Colab and not in CLI.

[hanlint]

Thanks @neverix we will hotfix this soon! For now, you can install the older version mosaicml==0.8 in colab.