Fix flake8 failures from pull/27

Fix a few formatting issues from within the
previous pull request.

Change-Id: Iadb0d5d4bfa1ac460c730e8af0cfec9386a4c066

stevedore/dispatch.py

@@ -88,7 +88,8 @@ class DispatchExtensionManager(EnabledExtensionManager):
         .. versionadded:: 0.12
 
         :param filter_func: Callable to test each extension.
-        :param method_name: The extension method name to call for each extension.
+        :param method_name: The extension method name to call
+                            for each extension.
         :param args: Variable arguments to pass to method
         :param kwds: Keyword arguments to pass to method
         :returns: List of values returned from methods
@@ -190,7 +191,8 @@ class NameDispatchExtensionManager(DispatchExtensionManager):
         .. versionadded:: 0.12
 
         :param names: List or set of name(s) of extension(s) to invoke.
-        :param method_name: The extension method name to call for each extension.
+        :param method_name: The extension method name
+                            to call for each extension.
         :param args: Variable arguments to pass to method
         :param kwds: Keyword arguments to pass to method
         :returns: List of values returned from methods

stevedore/extension.py

@@ -145,7 +145,7 @@ class ExtensionManager(object):
         return getattr(extension.obj, method_name)(*args, **kwds)
 
     def map_method(self, method_name, *args, **kwds):
-        """Iterate over the extensions invoking each one's object method called `method_name`.
+        """Iterate over the extensions invoking a method by name.
 
         This is equivalent of using :meth:`map` with func set to
         `lambda x: x.obj.method_name()`
@@ -157,12 +157,14 @@ class ExtensionManager(object):
 
         .. versionadded:: 0.12
 
-        :param method_name: The extension method name to call for each extension.
+        :param method_name: The extension method name
+                            to call for each extension.
         :param args: Variable arguments to pass to method
         :param kwds: Keyword arguments to pass to method
         :returns: List of values returned from methods
         """
-        return self.map(self._call_extension_method, method_name, *args, **kwds)
+        return self.map(self._call_extension_method,
+                        method_name, *args, **kwds)
 
     def _invoke_one_plugin(self, response_callback, func, e, args, kwds):
         try:

stevedore/tests/test_dispatch.py

@@ -88,6 +88,7 @@ def test_name_dispatch_ignore_missing():
     expected = [('t1', ('first',), {'named': 'named value'})]
     assert results == expected
 
+
 def test_name_dispatch_map_method():
     em = dispatch.NameDispatchExtensionManager(
         'stevedore.test.extension',