fix pep8

Author: kandluis

pytorch_lightning/__init__.py

@@ -7,12 +7,12 @@
 import typing
 
 _this_year = time.strftime("%Y")
-__version__ = '1.3.0dev'
-__author__ = 'William Falcon et al.'
-__author_email__ = '[email protected]'
-__license__ = 'Apache-2.0'
-__copyright__ = f'Copyright (c) 2018-{_this_year}, {__author__}.'
-__homepage__ = 'https://github.com/PyTorchLightning/pytorch-lightning'
+__version__ = "1.3.0dev"
+__author__ = "William Falcon et al."
+__author_email__ = "[email protected]"
+__license__ = "Apache-2.0"
+__copyright__ = f"Copyright (c) 2018-{_this_year}, {__author__}."
+__homepage__ = "https://github.com/PyTorchLightning/pytorch-lightning"
 # this has to be simple string, see: https://github.com/pypa/twine/issues/522
 __docs__ = (
     "PyTorch Lightning is the lightweight PyTorch wrapper for ML researchers."
@@ -77,17 +77,19 @@
     from pytorch_lightning.utilities.seed import seed_everything
 
     __all__ = [
-        'Trainer',
-        'LightningDataModule',
-        'LightningModule',
-        'Callback',
-        'seed_everything',
-        'metrics',
+        "Trainer",
+        "LightningDataModule",
+        "LightningModule",
+        "Callback",
+        "seed_everything",
+        "metrics",
     ]
 else:
-    sys.stdout.write(f'Partial import of `{__name__}` during the build process.\n')  # pragma: no-cover
+    sys.stdout.write(
+        f"Partial import of `{__name__}` during the build process.\n"
+    )  # pragma: no-cover
     # We are not importing the rest of the lightning during the build process, as it may not be compiled yet
-    
+
 
 # for compatibility with namespace packages
-__import__('pkg_resources').declare_namespace(__name__)
+__import__("pkg_resources").declare_namespace(__name__)