Apply yapf to python files

server/app/util/utils.py

@@ -7,6 +7,7 @@ from server.app.util.errors import DriverError
 
 
 class Float32JSONEncoder(json.JSONEncoder):
+
     def __init__(self, *args, **kwargs):
         """
         NaN/Infinities are illegal in standard JSON.  Python extends JSON with
@@ -35,9 +36,12 @@ def jsonify_scanpy(data):
 
 
 def requires_data(func):
+
     @wraps(func)
     def wrapped_function(self, *args, **kwargs):
         if self.data is None:
-            raise DriverError(f"error data must be loaded before you call {func.__name__}")
+            raise DriverError(
+                f"error data must be loaded before you call {func.__name__}")
         return func(self, *args, **kwargs)
+
     return wrapped_function