diff --git a/mainline/catalog.py b/mainline/catalog.py
index efb7a90..c67178f 100644
--- a/mainline/catalog.py
+++ b/mainline/catalog.py
@@ -68,10 +68,7 @@ def __new__(mcs, class_name, bases, attributes):
         else:
             cls._providers = mcs._provider_mapping_factory()
 
-        cls._providers.update(
-                {k: v for k, v in six.iteritems(attributes)
-                 if isinstance(v, IProvider)}
-        )
+        cls._providers.update({k: v for k, v in six.iteritems(attributes) if isinstance(v, IProvider)})
 
         return cls
 
diff --git a/mainline/injection.py b/mainline/injection.py
index 291c321..9f778a0 100644
--- a/mainline/injection.py
+++ b/mainline/injection.py
@@ -15,6 +15,7 @@
 
 
 class Injector(object):
+
     def __init__(self, di):
         self.di = di
 
@@ -26,6 +27,7 @@ def decorate(self, wrapped):
 
 
 class CallableInjector(Injector):
+
     def __init__(self, di, *args, **kwargs):
         super(CallableInjector, self).__init__(di)
         self.args = args
@@ -56,6 +58,7 @@ def __call__(self, wrapped):
 
 
 class SpecInjector(CallableInjector):
+
     def decorate(self, wrapped):
         # Remove the number of args from the wrapped function's argspec
         spec = getargspec(wrapped)
@@ -80,6 +83,7 @@ def decorator(wrapped, instance, args, kwargs):
 
 
 class AutoSpecInjector(CallableInjector):
+
     def decorate(self, wrapped):
         spec = getargspec(wrapped)
 
@@ -119,6 +123,7 @@ def decorator(*args, **kwargs):
 
 
 class ClassPropertyInjector(Injector):
+
     def __init__(self, di, key, name=None, replace_on_access=False):
         super(ClassPropertyInjector, self).__init__(di)
         self.key = key
diff --git a/mainline/provider.py b/mainline/provider.py
index 432e7e4..15e5fac 100644
--- a/mainline/provider.py
+++ b/mainline/provider.py
@@ -6,6 +6,7 @@
 
 
 class IProvider(object):
+
     def __init__(self):
         pass
 
@@ -27,6 +28,7 @@ def providable(self):
 
 
 class IFactoryProvider(IProvider):
+
     def __init__(self, factory=None):
         self.set_factory(factory)
 
@@ -58,9 +60,7 @@ def __init__(self, factory, scope=NoneScope, key=''):
         super(Provider, self).__init__(factory)
 
     def __repr__(self):
-        return '<%s factory=%s scope=%s>' % (self.__class__.__name__,
-                                             self.factory,
-                                             self.scope)
+        return '<%s factory=%s scope=%s>' % (self.__class__.__name__, self.factory, self.scope)
 
     def provide(self, *args, **kwargs):
         if self.has_instance():
diff --git a/mainline/scope.py b/mainline/scope.py
index f2bcff5..a769597 100644
--- a/mainline/scope.py
+++ b/mainline/scope.py
@@ -91,12 +91,14 @@ def instances_factory(self):
 
 
 class ProxyScope(IScope):
+
     def __init__(self, scope, *args, **kwargs):
         self.instances = scope
         super(ProxyScope, self).__init__(*args, **kwargs)
 
 
 class NamespacedProxyScope(ProxyScope):
+
     def __init__(self, namespace, scope, *args, **kwargs):
         self.namespace = namespace
         super(NamespacedProxyScope, self).__init__(scope, *args, **kwargs)
diff --git a/mainline/utils.py b/mainline/utils.py
index 842a0db..4a46c5e 100644
--- a/mainline/utils.py
+++ b/mainline/utils.py
@@ -15,6 +15,7 @@ def _get_object_init():
 
 
 class classproperty(object):
+
     def __init__(self, f):
         self.f = f
 
@@ -23,6 +24,7 @@ def __get__(self, obj, owner):
 
 
 class ProxyMutableMapping(collections.MutableMapping):
+
     def __init__(self, mapping):
         self.__mapping = mapping