Reverted the indentation and kept the docformat (merge from the 3.8 branch)

src/persistent/wref.py

@@ -95,7 +95,7 @@ class WeakRef(object):
     ...
     TypeError: Weakly-referenced object has gone away
 
-    Always explicitly close databases :) :
+    Always explicitly close databases: :)
 
     >>> db.close()
 
@@ -144,7 +144,7 @@ class PersistentWeakKeyDictionary(Persistent):
     of items is extremely lazy. See below.
 
     We'll start by creating a PersistentWeakKeyDictionary and adding
-    some persistent objects to it:
+    some persistent objects to it.
 
     >>> d = PersistentWeakKeyDictionary()
     >>> import ZODB.tests.util
@@ -192,7 +192,7 @@ class PersistentWeakKeyDictionary(Persistent):
     [True, True, True, False]
 
     Likewise, we can read the objects from another connection and
-    things still work:
+    things still work.
 
     >>> conn2 = db.open()
     >>> d = conn2.root()['d']
@@ -213,7 +213,7 @@ class PersistentWeakKeyDictionary(Persistent):
     >>> ZODB.tests.util.commit()
 
     And pack the database, so that the no-longer referenced p2 is
-    actually removed from the database:
+    actually removed from the database.
 
     >>> ZODB.tests.util.pack(db)
 
@@ -231,7 +231,7 @@ class PersistentWeakKeyDictionary(Persistent):
     conn1 and conn2 still have p2, because p2 is still in the caches
     for those connections.
 
-    Always explicitly close databases :) :
+    Always explicitly close databases: :)
 
     >>> db.close()
 
@@ -271,7 +271,7 @@ class PersistentWeakKeyDictionary(Persistent):
         del self.data[WeakRef(key)]
 
     def get(self, key, default=None):
-        """D.get(k[, d]) -> D[k] if k in D, else d. :
+        """D.get(k[, d]) -> D[k] if k in D, else d.
 
         >>> import ZODB.tests.util
         >>> key = ZODB.tests.util.P("key")