upgrade to black 20.8b1

It's better, the majority of these changes look more readable to me.
also found some docstrings that had formatting / quoting issues.

Change-Id: I582a45fde3a5648b2f36bab96bad56881321899b

4 files changed, 5 insertions, 9 deletions

diff --git a/lib/sqlalchemy/event/api.py b/lib/sqlalchemy/event/api.py
index b36c448ce..cd09235c3 100644
--- a/lib/sqlalchemy/event/api.py
+++ b/lib/sqlalchemy/event/api.py
@@ -196,8 +196,6 @@ def remove(target, identifier, fn):
 
 
 def contains(target, identifier, fn):
-    """Return True if the given target/ident/fn is set up to listen.
-
-    """
+    """Return True if the given target/ident/fn is set up to listen."""
 
     return _event_key(target, identifier, fn).contains()
diff --git a/lib/sqlalchemy/event/attr.py b/lib/sqlalchemy/event/attr.py
index abb264f98..baa3cd28a 100644
--- a/lib/sqlalchemy/event/attr.py
+++ b/lib/sqlalchemy/event/attr.py
@@ -379,7 +379,7 @@ class _ListenerCollection(_CompoundListener):
 
     def _update(self, other, only_propagate=True):
         """Populate from the listeners in another :class:`_Dispatch`
-            object."""
+        object."""
 
         existing_listeners = self.listeners
         existing_listener_set = set(existing_listeners)
diff --git a/lib/sqlalchemy/event/base.py b/lib/sqlalchemy/event/base.py
index c78080738..daa6f9aea 100644
--- a/lib/sqlalchemy/event/base.py
+++ b/lib/sqlalchemy/event/base.py
@@ -142,7 +142,7 @@ class _Dispatch(object):
 
     def _update(self, other, only_propagate=True):
         """Populate from the listeners in another :class:`_Dispatch`
-            object."""
+        object."""
         for ls in other._event_descriptors:
             if isinstance(ls, _EmptyListener):
                 continue
diff --git a/lib/sqlalchemy/event/registry.py b/lib/sqlalchemy/event/registry.py
index 144dd45dc..58680f356 100644
--- a/lib/sqlalchemy/event/registry.py
+++ b/lib/sqlalchemy/event/registry.py
@@ -139,8 +139,7 @@ def _clear(owner, elements):
 
 
 class _EventKey(object):
-    """Represent :func:`.listen` arguments.
-    """
+    """Represent :func:`.listen` arguments."""
 
     __slots__ = (
         "target",
@@ -239,8 +238,7 @@ class _EventKey(object):
                 collection.remove(self.with_wrapper(listener_fn))
 
     def contains(self):
-        """Return True if this event key is registered to listen.
-        """
+        """Return True if this event key is registered to listen."""
         return self._key in _key_to_collection
 
     def base_listen(