Config with pure python template (#71)

* Lint the code, improve coverage.
* Bumped version for breaking release.
* Drop support for Python 2.7, 3.5, 3.6.

1 files changed, 14 insertions, 6 deletions

diff --git a/src/zope/component/testlayer.py b/src/zope/component/testlayer.py
index f9d16ea..84ef2f1 100644
--- a/src/zope/component/testlayer.py
+++ b/src/zope/component/testlayer.py
@@ -14,19 +14,23 @@
 
 import os
 
-from zope.configuration import xmlconfig, config
+from zope.configuration import config
+from zope.configuration import xmlconfig
+
+
 try:
     from zope.testing.cleanup import cleanUp
-except ImportError: # pragma: no cover
+except ImportError:  # pragma: no cover
     def cleanUp():
         pass
 
 from zope.component import provideHandler
+from zope.component.eventtesting import clearEvents
+from zope.component.eventtesting import events
 from zope.component.hooks import setHooks
-from zope.component.eventtesting import events, clearEvents
 
 
-class LayerBase(object):
+class LayerBase:
     """Sane layer base class.
 
     zope.testing implements an advanced mechanism so that layer setUp,
@@ -75,11 +79,13 @@ class LayerBase(object):
     def testTearDown(self):
         pass
 
+
 class ZCMLLayerBase(LayerBase):
     """Base class to load up some ZCML.
     """
+
     def __init__(self, package, name=None, features=None):
-        super(ZCMLLayerBase, self).__init__(package, name)
+        super().__init__(package, name)
         self.features = features or []
 
     def setUp(self):
@@ -100,6 +106,7 @@ class ZCMLLayerBase(LayerBase):
     def _load_zcml(self, context):
         raise NotImplementedError
 
+
 class ZCMLFileLayer(ZCMLLayerBase):
     """This layer can be used to run tests with a ZCML file loaded.
 
@@ -108,9 +115,10 @@ class ZCMLFileLayer(ZCMLLayerBase):
     based on another ZCMLLayer's ZCML, just use a ZCML include
     statement in your own ZCML to load it.
     """
+
     def __init__(self, package, zcml_file='ftesting.zcml',
                  name=None, features=None):
-        super(ZCMLFileLayer, self).__init__(package, name, features)
+        super().__init__(package, name, features)
         self.zcml_file = os.path.join(os.path.dirname(package.__file__),
                                       zcml_file)