Fix flake8 issues. Print version of EESSI as part of the CI pipeline

.github/workflows/pip_install.yml

@@ -48,6 +48,7 @@ jobs:
             python --version
             python -m pip --version
             python -c 'import setuptools; print("setuptools", setuptools.__version__)'
+            python -c 'import eessi.testsuite; print("eessi.testsuite:", eess.testsuite.__version__)'
 
             python -c 'import eessi.testsuite.utils'
             python -c 'import eessi.testsuite.tests.apps'

eessi/testsuite/__init__.py

@@ -45,7 +45,7 @@
                     elif stripped_line.startswith("[") and in_setuptools_scm_section:
                         # We've reached a new section, so stop searching
                         break
- 
+
                     # If we're in the right section, look for the fallback_version key
                     if in_setuptools_scm_section and stripped_line.startswith("fallback_version"):
                         # Extract the value after the '=' sign and strip any surrounding quotes or whitespace
@@ -68,6 +68,10 @@
         except Exception as e:
             print("When trying to open file %s, an exception was raised: %s." % (pyproject_toml, e))
 
-        # One of the above three methods SHOULD work in any situation. If it doesn't, one will at this point
-        # get an error when trying to import __version__ from this file. That's ok, it's considered a bug
-        # if you reach this point without having a __version__ set
+# One of the above three methods to get __version__ defined SHOULD work in any situation.
+# It's considered a bug you reach this point without having a __version__ set
+if not __version__:
+    msg = "__version__ should have been defined by now, but it is not."
+    msg += " This is considered a bug, please report it in an issue on Github for the"
+    msg += " EESSI test suite."
+    raise ValueError(msg)

setup.py

@@ -2,6 +2,7 @@
 import sys
 import pkg_resources
 
+
 def get_version_by_import():
     # Add the fallback version to whatever was set for scm_dict
     sys.path.append('.')