Reformat with black

https://github.com/python/black

examples/tutorial/flaskr/db.py

@@ -10,10 +10,9 @@ def get_db():
     is unique for each request and will be reused if this is called
     again.
     """
-    if 'db' not in g:
+    if "db" not in g:
         g.db = sqlite3.connect(
-            current_app.config['DATABASE'],
-            detect_types=sqlite3.PARSE_DECLTYPES
+            current_app.config["DATABASE"], detect_types=sqlite3.PARSE_DECLTYPES
         )
         g.db.row_factory = sqlite3.Row
 
@@ -24,7 +23,7 @@ def close_db(e=None):
     """If this request connected to the database, close the
     connection.
     """
-    db = g.pop('db', None)
+    db = g.pop("db", None)
 
     if db is not None:
         db.close()
@@ -34,16 +33,16 @@ def init_db():
     """Clear existing data and create new tables."""
     db = get_db()
 
-    with current_app.open_resource('schema.sql') as f:
-        db.executescript(f.read().decode('utf8'))
+    with current_app.open_resource("schema.sql") as f:
+        db.executescript(f.read().decode("utf8"))
 
 
-@click.command('init-db')
+@click.command("init-db")
 @with_appcontext
 def init_db_command():
     """Clear existing data and create new tables."""
     init_db()
-    click.echo('Initialized the database.')
+    click.echo("Initialized the database.")
 
 
 def init_app(app):