Deprecate moved warning functions (#8085)

Author: awaelchli

CHANGELOG.md

@@ -4,13 +4,16 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/).
 
+
 ## [1.3.7] - 2021-06-22
 
 - Fixed a bug where skipping an optimizer while using amp causes amp to trigger an assertion error ([#7975](https://github.com/PyTorchLightning/pytorch-lightning/pull/7975))
 - Fixed deprecation messages not showing due to incorrect stacklevel ([#8002](https://github.com/PyTorchLightning/pytorch-lightning/pull/8002), [#8005](https://github.com/PyTorchLightning/pytorch-lightning/pull/8005))
 - Fixed setting a `DistributedSampler` when using a distributed plugin in a custom accelerator ([#7814](https://github.com/PyTorchLightning/pytorch-lightning/pull/7814))
 - Improved `PyTorchProfiler` chrome traces names ([#8009](https://github.com/PyTorchLightning/pytorch-lightning/pull/8009))
 - Fixed moving the best score to device in `EarlyStopping` callback for TPU devices ([#7959](https://github.com/PyTorchLightning/pytorch-lightning/pull/7959))
+- Fixed backward compatibility of moved functions `rank_zero_warn` and `rank_zero_deprecation` ([#8085](https://github.com/PyTorchLightning/pytorch-lightning/pull/8085))
+
 
 ## [1.3.6] - 2021-06-15
 

pytorch_lightning/__about__.py

@@ -1,7 +1,7 @@
 import time
 
 _this_year = time.strftime("%Y")
-__version__ = '1.3.7'
+__version__ = '1.3.7post0'
 __author__ = 'William Falcon et al.'
 __author_email__ = '[email protected]'
 __license__ = 'Apache-2.0'

pytorch_lightning/utilities/distributed.py

@@ -65,6 +65,24 @@ def _get_rank() -> int:
 rank_zero_only.rank = getattr(rank_zero_only, 'rank', _get_rank())
 
 
+def rank_zero_warn(*args, stacklevel: int = 5, **kwargs):
+    from pytorch_lightning.utilities.warnings import rank_zero_deprecation, rank_zero_warn
+    rank_zero_deprecation(
+        '`pytorch_lightning.utilities.distributed.rank_zero_warn` has been moved to'
+        ' `pytorch_lightning.utilities.rank_zero_warn` in v1.3.7 and will be removed in v1.6'
+    )
+    return rank_zero_warn(*args, stacklevel=stacklevel, **kwargs)
+
+
+def rank_zero_deprecation(*args, stacklevel: int = 5, **kwargs):
+    from pytorch_lightning.utilities.warnings import rank_zero_deprecation
+    rank_zero_deprecation(
+        '`pytorch_lightning.utilities.distributed.rank_zero_deprecation` has been moved to'
+        ' `pytorch_lightning.utilities.rank_zero_deprecation` in v1.3.7 and will be removed in v1.6'
+    )
+    return rank_zero_deprecation(*args, stacklevel=stacklevel, **kwargs)
+
+
 def _info(*args, stacklevel: int = 2, **kwargs):
     if python_version() >= "3.8.0":
         kwargs['stacklevel'] = stacklevel