audit % format calls

src/flake8/options/config.py

@@ -344,7 +344,7 @@ def get_local_plugins(config_finder):
 
     base_dirs = {os.path.dirname(cf) for cf in config_files}
 
-    section = "%s:local-plugins" % config_finder.program_name
+    section = f"{config_finder.program_name}:local-plugins"
     for plugin_type in ["extension", "report"]:
         if config.has_option(section, plugin_type):
             local_plugins_string = config.get(section, plugin_type).strip()

src/flake8/plugins/manager.py

@@ -138,9 +138,9 @@ class Plugin:
         self._plugin = self.entry_point.load()
         if not callable(self._plugin):
             msg = (
-                "Plugin %r is not a callable. It might be written for an"
-                " older version of flake8 and might not work with this"
-                " version" % self._plugin
+                f"Plugin {self._plugin!r} is not a callable. It might be "
+                f"written for an older version of flake8 and might not work "
+                f"with this version"
             )
             LOG.critical(msg)
             raise TypeError(msg)

src/flake8/plugins/pyflakes.py

@@ -165,10 +165,10 @@ class FlakesChecker(pyflakes.checker.Checker):
         )
         if inc_exc:
             raise ValueError(
-                '"%s" was specified in both the '
-                "include-in-doctest and exclude-from-doctest "
-                "options. You are not allowed to specify it in "
-                "both for doctesting." % inc_exc
+                f"{inc_exc!r} was specified in both the "
+                f"include-in-doctest and exclude-from-doctest "
+                f"options. You are not allowed to specify it in "
+                f"both for doctesting."
             )
 
     def run(self):

src/flake8/processor.py

@@ -438,7 +438,7 @@ def log_token(log: logging.Logger, token: _Token) -> None:
     if token[2][0] == token[3][0]:
         pos = "[{}:{}]".format(token[2][1] or "", token[3][1])
     else:
-        pos = "l.%s" % token[3][0]
+        pos = f"l.{token[3][0]}"
     log.log(
         flake8._EXTRA_VERBOSE,
         "l.%s\t%s\t%s\t%r"