feat: Add Rich Progress Bar

CHANGELOG.md

@@ -69,6 +69,9 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/).
 - Added a friendly error message when DDP attempts to spawn new distributed processes with rank > 0 ([#9005](https://github.com/PyTorchLightning/pytorch-lightning/pull/9005))
 
 
+- Added Rich Progress Bar ([#8929](https://github.com/PyTorchLightning/pytorch-lightning/pull/8929))
+
+
 ### Changed
 
 - Parsing of the `gpus` Trainer argument has changed: `gpus="n"` (str) no longer selects the GPU index n and instead selects the first n devices. ([#8770](https://github.com/PyTorchLightning/pytorch-lightning/pull/8770))

pytorch_lightning/callbacks/__init__.py

@@ -20,7 +20,7 @@
 from pytorch_lightning.callbacks.lr_monitor import LearningRateMonitor
 from pytorch_lightning.callbacks.model_checkpoint import ModelCheckpoint
 from pytorch_lightning.callbacks.prediction_writer import BasePredictionWriter
-from pytorch_lightning.callbacks.progress import ProgressBar, ProgressBarBase
+from pytorch_lightning.callbacks.progress import ProgressBar, ProgressBarBase, RichProgressBar
 from pytorch_lightning.callbacks.pruning import ModelPruning
 from pytorch_lightning.callbacks.quantization import QuantizationAwareTraining
 from pytorch_lightning.callbacks.stochastic_weight_avg import StochasticWeightAveraging
@@ -45,4 +45,5 @@
     "QuantizationAwareTraining",
     "StochasticWeightAveraging",
     "Timer",
+    "RichProgressBar",
 ]

pytorch_lightning/callbacks/progress/__init__.py

@@ -0,0 +1,23 @@
+# Copyright The PyTorch Lightning team.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+"""
+Progress Bars
+=============
+
+Use or override one of the progress bar callbacks.
+
+"""
+from pytorch_lightning.callbacks.progress.base import ProgressBarBase  # noqa: F401
+from pytorch_lightning.callbacks.progress.progress import ProgressBar, tqdm  # noqa: F401
+from pytorch_lightning.callbacks.progress.rich_progress import RichProgressBar  # noqa: F401

pytorch_lightning/callbacks/progress/base.py

@@ -0,0 +1,181 @@
+# Copyright The PyTorch Lightning team.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+from pytorch_lightning.callbacks import Callback
+
+
+class ProgressBarBase(Callback):
+    r"""
+    The base class for progress bars in Lightning. It is a :class:`~pytorch_lightning.callbacks.Callback`
+    that keeps track of the batch progress in the :class:`~pytorch_lightning.trainer.trainer.Trainer`.
+    You should implement your highly custom progress bars with this as the base class.
+
+    Example::
+
+        class LitProgressBar(ProgressBarBase):
+
+            def __init__(self):
+                super().__init__()  # don't forget this :)
+                self.enable = True
+
+            def disable(self):
+                self.enable = False
+
+            def on_train_batch_end(self, trainer, pl_module, outputs):
+                super().on_train_batch_end(trainer, pl_module, outputs)  # don't forget this :)
+                percent = (self.train_batch_idx / self.total_train_batches) * 100
+                sys.stdout.flush()
+                sys.stdout.write(f'{percent:.01f} percent complete \r')
+
+        bar = LitProgressBar()
+        trainer = Trainer(callbacks=[bar])
+
+    """
+
+    def __init__(self):
+
+        self._trainer = None
+        self._train_batch_idx = 0
+        self._val_batch_idx = 0
+        self._test_batch_idx = 0
+        self._predict_batch_idx = 0
+
+    @property
+    def trainer(self):
+        return self._trainer
+
+    @property
+    def train_batch_idx(self) -> int:
+        """
+        The current batch index being processed during training.
+        Use this to update your progress bar.
+        """
+        return self._train_batch_idx
+
+    @property
+    def val_batch_idx(self) -> int:
+        """
+        The current batch index being processed during validation.
+        Use this to update your progress bar.
+        """
+        return self._val_batch_idx
+
+    @property
+    def test_batch_idx(self) -> int:
+        """
+        The current batch index being processed during testing.
+        Use this to update your progress bar.
+        """
+        return self._test_batch_idx
+
+    @property
+    def predict_batch_idx(self) -> int:
+        """
+        The current batch index being processed during predicting.
+        Use this to update your progress bar.
+        """
+        return self._predict_batch_idx
+
+    @property
+    def total_train_batches(self) -> int:
+        """
+        The total number of training batches during training, which may change from epoch to epoch.
+        Use this to set the total number of iterations in the progress bar. Can return ``inf`` if the
+        training dataloader is of infinite size.
+        """
+        return self.trainer.num_training_batches
+
+    @property
+    def total_val_batches(self) -> int:
+        """
+        The total number of validation batches during validation, which may change from epoch to epoch.
+        Use this to set the total number of iterations in the progress bar. Can return ``inf`` if the
+        validation dataloader is of infinite size.
+        """
+        total_val_batches = 0
+        if self.trainer.enable_validation:
+            is_val_epoch = (self.trainer.current_epoch + 1) % self.trainer.check_val_every_n_epoch == 0
+            total_val_batches = sum(self.trainer.num_val_batches) if is_val_epoch else 0
+
+        return total_val_batches
+
+    @property
+    def total_test_batches(self) -> int:
+        """
+        The total number of testing batches during testing, which may change from epoch to epoch.
+        Use this to set the total number of iterations in the progress bar. Can return ``inf`` if the
+        test dataloader is of infinite size.
+        """
+        return sum(self.trainer.num_test_batches)
+
+    @property
+    def total_predict_batches(self) -> int:
+        """
+        The total number of predicting batches during testing, which may change from epoch to epoch.
+        Use this to set the total number of iterations in the progress bar. Can return ``inf`` if the
+        predict dataloader is of infinite size.
+        """
+        return sum(self.trainer.num_predict_batches)
+
+    def disable(self):
+        """
+        You should provide a way to disable the progress bar.
+        The :class:`~pytorch_lightning.trainer.trainer.Trainer` will call this to disable the
+        output on processes that have a rank different from 0, e.g., in multi-node training.
+        """
+        raise NotImplementedError
+
+    def enable(self):
+        """
+        You should provide a way to enable the progress bar.
+        The :class:`~pytorch_lightning.trainer.trainer.Trainer` will call this in e.g. pre-training
+        routines like the :ref:`learning rate finder <advanced/lr_finder:Learning Rate Finder>`
+        to temporarily enable and disable the main progress bar.
+        """
+        raise NotImplementedError
+
+    def print(self, *args, **kwargs):
+        """
+        You should provide a way to print without breaking the progress bar.
+        """
+        print(*args, **kwargs)
+
+    def on_init_end(self, trainer):
+        self._trainer = trainer
+
+    def on_train_start(self, trainer, pl_module):
+        self._train_batch_idx = trainer.fit_loop.batch_idx
+
+    def on_train_epoch_start(self, trainer, pl_module):
+        self._train_batch_idx = 0
+
+    def on_train_batch_end(self, trainer, pl_module, outputs, batch, batch_idx, dataloader_idx):
+        self._train_batch_idx += 1
+
+    def on_validation_start(self, trainer, pl_module):
+        self._val_batch_idx = 0
+
+    def on_validation_batch_end(self, trainer, pl_module, outputs, batch, batch_idx, dataloader_idx):
+        self._val_batch_idx += 1
+
+    def on_test_start(self, trainer, pl_module):
+        self._test_batch_idx = 0
+
+    def on_test_batch_end(self, trainer, pl_module, outputs, batch, batch_idx, dataloader_idx):
+        self._test_batch_idx += 1
+
+    def on_predict_epoch_start(self, trainer, pl_module):
+        self._predict_batch_idx = 0
+
+    def on_predict_batch_end(self, trainer, pl_module, outputs, batch, batch_idx, dataloader_idx):
+        self._predict_batch_idx += 1