Move from % string formatting syntax to f-string or .format()

1 files changed, 8 insertions, 6 deletions

diff --git a/pylint/message/message_definition.py b/pylint/message/message_definition.py
index 8b2fcaf08..3fb9af945 100644
--- a/pylint/message/message_definition.py
+++ b/pylint/message/message_definition.py
@@ -41,13 +41,15 @@ class MessageDefinition:
         if len(msgid) != 5:
             raise InvalidMessageError("Invalid message id %r" % msgid)
         if msgid[0] not in MSG_TYPES:
-            raise InvalidMessageError("Bad message type %s in %r" % (msgid[0], msgid))
+            raise InvalidMessageError(
+                "Bad message type {} in {!r}".format(msgid[0], msgid)
+            )
 
     def __repr__(self):
-        return "MessageDefinition:%s (%s)" % (self.symbol, self.msgid)
+        return f"MessageDefinition:{self.symbol} ({self.msgid})"
 
     def __str__(self):
-        return "%s:\n%s %s" % (repr(self), self.msg, self.description)
+        return "{}:\n{} {}".format(repr(self), self.msg, self.description)
 
     def may_be_emitted(self):
         """return True if message may be emitted using the current interpreter"""
@@ -75,8 +77,8 @@ class MessageDefinition:
             else:
                 desc += " This message can't be emitted when using Python %s." % restr
         msg_help = normalize_text(" ".join(desc.split()), indent="  ")
-        message_id = "%s (%s)" % (self.symbol, self.msgid)
+        message_id = f"{self.symbol} ({self.msgid})"
         if title != "%s":
             title = title.splitlines()[0]
-            return ":%s: *%s*\n%s" % (message_id, title.rstrip(" "), msg_help)
-        return ":%s:\n%s" % (message_id, msg_help)
+            return ":{}: *{}*\n{}".format(message_id, title.rstrip(" "), msg_help)
+        return f":{message_id}:\n{msg_help}"