CI: fix nightly release version (#5260)

* CI fix nigtly releases

* format

* fix unrelated flake8

Author: Borda

.github/prepare-nightly_version.py

@@ -2,15 +2,17 @@
 import os
 import re
 
-PATH_ROOT = os.path.abspath(os.path.dirname(os.path.dirname(__file__)))
+# set paths
+_PATH_ROOT = os.path.abspath(os.path.dirname(os.path.dirname(__file__)))
+_PATH_INIT = os.path.join(_PATH_ROOT, 'pytorch_lightning', '__init__.py')
 
 # get today date
 now = datetime.datetime.now()
 now_date = now.strftime("%Y%m%d")
-PATH_INIT = os.path.join(PATH_ROOT, 'pytorch_lightning', '__init__.py')
-print(f"prepare init '{PATH_INIT}' - replace version by {now_date}")
-with open(PATH_INIT, 'r') as fp:
+
+print(f"prepare init '{_PATH_INIT}' - replace version by {now_date}")
+with open(_PATH_INIT, 'r') as fp:
     init = fp.read()
-init = re.sub(r'__version__ = [\d\.rc\'"]+', f'__version__ = "{now_date}"', init)
-with open(PATH_INIT, 'w') as fp:
+init = re.sub(r'__version__ = [\d\.\w\'"]+', f'__version__ = "{now_date}"', init)
+with open(_PATH_INIT, 'w') as fp:
     fp.write(init)

tests/deprecated_api/test_remove_1-3.py

@@ -21,7 +21,6 @@
 from pytorch_lightning import LightningModule, Trainer
 from pytorch_lightning.callbacks import EarlyStopping, ModelCheckpoint
 from pytorch_lightning.profiler.profilers import PassThroughProfiler, SimpleProfiler
-from tests.deprecated_api import _soft_unimport_module
 
 
 def test_v1_3_0_deprecated_arguments(tmpdir):