fix errors raised by recent versions of ruff

this makes the CI pass again.

docs/conf.py

@@ -55,7 +55,7 @@
 
 # General information about the project.
 project = "cantools"
-copyright = "2015-2023, Erik Moqvist"
+project_copyright = "2015-2023, Erik Moqvist"
 author = "Erik Moqvist"
 
 # The version info for the project you're documenting, acts as replacement for

src/cantools/database/can/database.py

@@ -158,7 +158,7 @@ def _objects_similar(a: Any,
                          tolerance: float,
                          include_format_specifics: bool) -> bool:
 
-        if type(a) != type(b):
+        if type(a) is not type(b):
             # the types of the objects do not match
             return False
         elif a is None:
@@ -221,7 +221,7 @@ def _objects_similar(a: Any,
             a_attrib = getattr(a, attrib_name)
             b_attrib = getattr(b, attrib_name)
 
-            if type(a_attrib) != type(b_attrib):
+            if type(a_attrib) is not type(b_attrib):
                 return False
             elif callable(a_attrib):
                 # ignore callable attributes

tests/test_database.py

@@ -2451,7 +2451,7 @@ def test_comments_hex_and_motorola_sym(self):
 
         for i in range(8):
             sig = msg2.signals[i]
-            self.assertEqual(sig.name, 'Test%s' % i)
+            self.assertEqual(sig.name, f'Test{i}')
             self.assertEqual(sig.start, i*8 + 7)
             self.assertEqual(sig.length, 8)
             self.assertEqual(sig.receivers, [])