Feed the hobgoblins (delint).

setuptools/config.py

@@ -110,7 +110,8 @@ def parse_configuration(
     options.parse()
 
     meta = ConfigMetadataHandler(
-        distribution.metadata, command_options, ignore_option_errors, distribution.package_dir)
+        distribution.metadata, command_options, ignore_option_errors,
+        distribution.package_dir)
     meta.parse()
 
     return meta, options
@@ -458,9 +459,12 @@ class ConfigMetadataHandler(ConfigHandler):
             # Be strict about versions loaded from file because it's easy to
             # accidentally include newlines and other unintended content
             if isinstance(parse(version), LegacyVersion):
-                raise DistutilsOptionError('Version loaded from %s does not comply with PEP 440: %s' % (
-                    value, version
-                ))
+                tmpl = (
+                    'Version loaded from {value} does not '
+                    'comply with PEP 440: {version}'
+                )
+                raise DistutilsOptionError(tmpl.format(**locals()))
+
             return version
 
         version = self._parse_attr(value, self.package_dir)
@@ -518,12 +522,13 @@ class ConfigOptionsHandler(ConfigHandler):
         find_directives = ['find:', 'find_namespace:']
         trimmed_value = value.strip()
 
-        if not trimmed_value in find_directives:
+        if trimmed_value not in find_directives:
             return self._parse_list(value)
 
         findns = trimmed_value == find_directives[1]
         if findns and not PY3:
-            raise DistutilsOptionError('find_namespace: directive is unsupported on Python < 3.3')
+            raise DistutilsOptionError(
+                'find_namespace: directive is unsupported on Python < 3.3')
 
         # Read function arguments from a dedicated section.
         find_kwargs = self.parse_section_packages__find(