Fix pylint errors.

Addressing
************* Module swidtags
lib/dnf-plugins/swidtags.py:166:4: E1200: Unsupported logging format character 'p' (0x70) at index 33 (logging-unsupported-format)
lib/dnf-plugins/swidtags.py:249:50: E0602: Undefined variable 'file' (undefined-variable)
************* Module swidq
lib/swidq/__init__.py:34:1: E0101: Explicit return in __init__ (return-in-init)

MANIFEST.in

@@ -1,2 +1,2 @@
-include test.sh LICENSE
+include test.sh LICENSE Makefile
 recursive-include tests *

Makefile

@@ -14,6 +14,9 @@ spec:
 test:
 	./test.sh
 
+test-pylint:
+	pylint-3 -E lib/*/*.py setup.py
+
 clean:
 	rm -rf $(shell cat .gitignore)
 

bdist_rpm/install_script

@@ -3,7 +3,7 @@ python3 setup.py install --single-version-externally-managed -O1 --root=$RPM_BUI
 sed -i 's#^/etc#%config(noreplace) /etc#' INSTALLED_FILES
 
 %check
-./test.sh
+make test-pylint test
 
 %post
 

lib/dnf-plugins/swidtags.py

@@ -163,7 +163,7 @@ def transaction(self):
 		remove_packages = {}
 		for p in self.remove_set:
 			if p not in self.remove_set_checksum:
-				logger.warning("Could not identify checksum for %p, potential SWID tag will not be removed", p)
+				logger.warning("Could not identify checksum for %s, potential SWID tag will not be removed", p)
 				continue
 			remove_packages[self.remove_set_checksum[p]] = True
 		if len(remove_packages) > 0:
@@ -246,7 +246,7 @@ def purge_generated_dir(self):
 				unlink(path.join(self.dir_generated, f))
 				count += 1
 			except OSError as e:
-				logger.warning("Failed to remove [%s]: %s" % (file, e))
+				logger.warning("Failed to remove [%s]: %s" % (f, e))
 		try:
 			rmdir(self.dir_generated)
 		except OSError:

lib/swidq/__init__.py

@@ -35,7 +35,7 @@ def __init__(self, file=None, copy_from=None):
 		if copy_from:
 			self.__dict__ = deepcopy(copy_from.__dict__)
 		else:
-			return self._load_from_file( file)
+			self._load_from_file( file)
 
 	def _load_from_file(self, file):
 		self.path = file

setup.cfg

@@ -1,5 +1,5 @@
 [bdist_rpm]
 requires = python3-rpm python3-lxml dnf-plugins-core xmlsec1-openssl
-build_requires = python3 python3-setuptools python3-rpm python3-lxml openssl xmlsec1-openssl createrepo_c fakechroot fakeroot dnf dnf-plugins-core gzip gnupg2
+build_requires = python3 python3-setuptools python3-rpm python3-lxml openssl xmlsec1-openssl createrepo_c fakechroot fakeroot dnf dnf-plugins-core gzip gnupg2 python3-pylint
 release = 1%%{dist}
 obsoletes = dnf-plugin-swidtags swid-tools