Update Singleton provider docs

docs/providers/singleton.rst

@@ -1,7 +1,7 @@
 Singleton providers
 -------------------
 
-``Singleton`` provider creates new instance of specified class on first call
+``di.Singleton`` provider creates new instance of specified class on first call
 and returns same instance on every next call.
 
 Example:
@@ -16,9 +16,9 @@ Example:
 Singleton providers and injections
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
-``Singleton`` providers use ``Factory`` providers for first creation of
+``di.Singleton`` providers use ``di.Factory`` providers for first creation of
 specified class instance, so, all of the rules about injections are the same,
-as for ``Factory`` providers.
+as for ``di.Factory`` providers.
 
 .. image:: /images/providers/singleton_internals.png
     :width: 80%
@@ -26,27 +26,29 @@ as for ``Factory`` providers.
 
 .. note::
 
-    Due that ``Singleton`` provider creates specified class instance only on
+    Due that ``di.Singleton`` provider creates specified class instance only on
     the first call, all injections are done once, during the first call, also.
     Every next call, while instance has been already created and memorized, no
-    injections are done, ``Singleton`` provider just returns memorized earlier
-    instance.
+    injections are done, ``di.Singleton`` provider just returns memorized 
+    earlier instance.
 
     This may cause some problems, for example, in case of trying to bind
-    ``Factory`` provider with ``Singleton`` provider (provided by dependent
-    ``Factory`` instance will be injected only once, during the first call).
-    Be aware that such behaviour was made with opened eyes and is not a bug.
+    ``di.Factory`` provider with ``di.Singleton`` provider (provided by 
+    dependent ``di.Factory`` instance will be injected only once, during the 
+    first call). Be aware that such behaviour was made with opened eyes and is 
+    not a bug.
 
-    By the way, in such case, ``Delegate`` provider can be useful. It makes
+    By the way, in such case, ``di.Delegate`` provider can be useful. It makes
     possible to inject providers *as is*. Please check out full example in
     *Providers delegation* section.
 
 Singleton providers resetting
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
-Created and memorized by ``Singleton`` instance can be reset. Reset of
-``Singleton``'s memorized instance is done by clearing reference to it. Further
-lifecycle of memorized instance is out of ``Singleton`` provider's control.
+Created and memorized by ``di.Singleton`` instance can be reset. Reset of
+``di.Singleton``'s memorized instance is done by clearing reference to it. 
+Further lifecycle of memorized instance is out of ``di.Singleton`` provider's 
+control.
 
 Example:
 
@@ -56,13 +58,14 @@ Example:
 Singleton providers delegation
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
-``Singleton`` provider could be delegated to any other provider via any kind of
-injection. Delegation of ``Singleton`` providers is the same as ``Factory``
-providers delegation, please follow *Factory providers delegation* section for
-example.
+``di.Singleton`` provider could be delegated to any other provider via any 
+kind of injection. Delegation of ``di.Singleton`` providers is the same as 
+``di.Factory`` providers delegation, please follow 
+*Factory providers delegation* section for example.
 
-``Singleton`` delegate could be created obviously using 
-``Delegate(Singleton())`` or by calling ``Singleton.delegate()`` method.
+``di.Singleton`` delegate could be created obviously using 
+``di.Delegate(di.Singleton())`` or by calling ``di.Singleton.delegate()`` 
+method.
 
 Example:
 

examples/providers/singleton.py

@@ -1,6 +1,6 @@
-"""`Singleton` providers example."""
+"""`di.Singleton` providers example."""
 
-from dependency_injector.providers import Singleton
+import dependency_injector as di
 
 
 class UserService(object):
@@ -9,7 +9,7 @@ class UserService(object):
 
 # Singleton provider creates new instance of specified class on first call and
 # returns same instance on every next call.
-users_service_provider = Singleton(UserService)
+users_service_provider = di.Singleton(UserService)
 
 # Retrieving several UserService objects:
 user_service1 = users_service_provider()

examples/providers/singleton_delegation.py

@@ -1,13 +1,12 @@
-"""`Singleton` providers delegation example."""
+"""`di.Singleton` providers delegation example."""
 
-from dependency_injector.providers import Singleton
-from dependency_injector.providers import Delegate
+import dependency_injector as di
 
 
 # Some singleton provider and few delegates of it:
-singleton_provider = Singleton(object)
+singleton_provider = di.Singleton(object)
 singleton_provider_delegate1 = singleton_provider.delegate()
-singleton_provider_delegate2 = Delegate(singleton_provider)
+singleton_provider_delegate2 = di.Delegate(singleton_provider)
 
 # Making some asserts:
 assert singleton_provider_delegate1() is singleton_provider

examples/providers/singleton_reseting.py

@@ -1,6 +1,6 @@
-"""`Singleton` providers resetting example."""
+"""`di.Singleton` providers resetting example."""
 
-from dependency_injector.providers import Singleton
+import dependency_injector as di
 
 
 class UserService(object):
@@ -8,7 +8,7 @@ class UserService(object):
     """Example class UserService."""
 
 # Users service singleton provider:
-users_service_provider = Singleton(UserService)
+users_service_provider = di.Singleton(UserService)
 
 # Retrieving several UserService objects:
 user_service1 = users_service_provider()