python: fix pycodestyle issues

Create a file 'setup.cfg' so that openbmc-build-scripts will
automatically run 'pycodestyle' on the code base.

Fix up any issues already reported by pycodestyle.

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I5d98df0b844e5cbdbdb4dc580cb4c406538f3b4f
diff --git a/tools/sdbusplus/namedelement.py b/tools/sdbusplus/namedelement.py
index 1548ef0..4c2ee2a 100644
--- a/tools/sdbusplus/namedelement.py
+++ b/tools/sdbusplus/namedelement.py
@@ -8,16 +8,16 @@
         self.description = kwargs.pop('description', "")
 
     def __getattribute__(self, name):
-        l = {'CamelCase': lambda: inflection.camelize(self.name),
-             'camelCase': lambda: inflection.camelize(self.name, False),
-             'snake_case': lambda: inflection.underscore(self.name)}\
+        lam = {'CamelCase': lambda: inflection.camelize(self.name),
+               'camelCase': lambda: inflection.camelize(self.name, False),
+               'snake_case': lambda: inflection.underscore(self.name)}\
             .get(name)
 
-        if l:
-            return NamedElement.__fixup_name(l())
+        if lam:
+            return NamedElement.__fixup_name(lam())
         try:
             return super(NamedElement, self).__getattribute__(name)
-        except:
+        except e:
             raise AttributeError("Attribute '%s' not found in %s.NamedElement"
                                  % (name, self.__module__))