Add inst_processors to D.features

qlib/utils/serial.py

@@ -1,10 +1,9 @@
 # Copyright (c) Microsoft Corporation.
 # Licensed under the MIT License.
 
-from pathlib import Path
 import pickle
-import typing
 import dill
+from pathlib import Path
 from typing import Union
 
 
@@ -18,6 +17,7 @@ class Serializable:
 
     pickle_backend = "pickle"  # another optional value is "dill" which can pickle more things of python.
     default_dump_all = False  # if dump all things
+    FLAG_KEY = "_qlib_serial_flag"
 
     def __init__(self):
         self._dump_all = self.default_dump_all
@@ -45,8 +45,6 @@ class Serializable:
         """
         return getattr(self, "_exclude", [])
 
-    FLAG_KEY = "_qlib_serial_flag"
-
     def config(self, dump_all: bool = None, exclude: list = None, recursive=False):
         """
         configure the serializable object