Run black -l 79 against all source files

This is a straight reformat run using black as is, with no edits
applied at all.

The black run will format code consistently, however in
some cases that are prevalent in SQLAlchemy code it produces
too-long lines.   The too-long lines will be resolved in the
following commit that will resolve all remaining flake8 issues
including shadowed builtins, long lines, import order, unused
imports, duplicate imports, and docstring issues.

Change-Id: I7eda77fed3d8e73df84b3651fd6cfcfe858d4dc9

1 files changed, 49 insertions, 29 deletions

diff --git a/examples/materialized_paths/materialized_paths.py b/examples/materialized_paths/materialized_paths.py
index 4ded90f7e..45ae0c193 100644
--- a/examples/materialized_paths/materialized_paths.py
+++ b/examples/materialized_paths/materialized_paths.py
@@ -44,21 +44,35 @@ class Node(Base):
     # To find the descendants of this node, we look for nodes whose path
     # starts with this node's path.
     descendants = relationship(
-        "Node", viewonly=True, order_by=path,
-        primaryjoin=remote(foreign(path)).like(path.concat(".%")))
+        "Node",
+        viewonly=True,
+        order_by=path,
+        primaryjoin=remote(foreign(path)).like(path.concat(".%")),
+    )
 
     # Finding the ancestors is a little bit trickier. We need to create a fake
     # secondary table since this behaves like a many-to-many join.
-    secondary = select([
-        id.label("id"),
-        func.unnest(cast(func.string_to_array(
-            func.regexp_replace(path, r"\.?\d+$", ""), "."),
-            ARRAY(Integer))).label("ancestor_id")
-    ]).alias()
-    ancestors = relationship("Node", viewonly=True, secondary=secondary,
-                             primaryjoin=id == secondary.c.id,
-                             secondaryjoin=secondary.c.ancestor_id == id,
-                             order_by=path)
+    secondary = select(
+        [
+            id.label("id"),
+            func.unnest(
+                cast(
+                    func.string_to_array(
+                        func.regexp_replace(path, r"\.?\d+$", ""), "."
+                    ),
+                    ARRAY(Integer),
+                )
+            ).label("ancestor_id"),
+        ]
+    ).alias()
+    ancestors = relationship(
+        "Node",
+        viewonly=True,
+        secondary=secondary,
+        primaryjoin=id == secondary.c.id,
+        secondaryjoin=secondary.c.ancestor_id == id,
+        order_by=path,
+    )
 
     @property
     def depth(self):
@@ -70,38 +84,44 @@ class Node(Base):
     def __str__(self):
         root_depth = self.depth
         s = [str(self.id)]
-        s.extend(((n.depth - root_depth) * "  " + str(n.id))
-                 for n in self.descendants)
+        s.extend(
+            ((n.depth - root_depth) * "  " + str(n.id))
+            for n in self.descendants
+        )
         return "\n".join(s)
 
     def move_to(self, new_parent):
         new_path = new_parent.path + "." + str(self.id)
         for n in self.descendants:
-            n.path = new_path + n.path[len(self.path):]
+            n.path = new_path + n.path[len(self.path) :]
         self.path = new_path
 
 
 if __name__ == "__main__":
-    engine = create_engine("postgresql://scott:tiger@localhost/test", echo=True)
+    engine = create_engine(
+        "postgresql://scott:tiger@localhost/test", echo=True
+    )
     Base.metadata.create_all(engine)
 
     session = Session(engine)
 
     print("-" * 80)
     print("create a tree")
-    session.add_all([
-        Node(id=1, path="1"),
-        Node(id=2, path="1.2"),
-        Node(id=3, path="1.3"),
-        Node(id=4, path="1.3.4"),
-        Node(id=5, path="1.3.5"),
-        Node(id=6, path="1.3.6"),
-        Node(id=7, path="1.7"),
-        Node(id=8, path="1.7.8"),
-        Node(id=9, path="1.7.9"),
-        Node(id=10, path="1.7.9.10"),
-        Node(id=11, path="1.7.11"),
-    ])
+    session.add_all(
+        [
+            Node(id=1, path="1"),
+            Node(id=2, path="1.2"),
+            Node(id=3, path="1.3"),
+            Node(id=4, path="1.3.4"),
+            Node(id=5, path="1.3.5"),
+            Node(id=6, path="1.3.6"),
+            Node(id=7, path="1.7"),
+            Node(id=8, path="1.7.8"),
+            Node(id=9, path="1.7.9"),
+            Node(id=10, path="1.7.9.10"),
+            Node(id=11, path="1.7.11"),
+        ]
+    )
     session.flush()
     print(str(session.query(Node).get(1)))