Reorganize imports; start moving data to instance.training_data

miplearn/instance.py

@@ -5,10 +5,12 @@
 import gzip
 import json
 from abc import ABC, abstractmethod
-from typing import Any
+from typing import Any, List
 
 import numpy as np
 
+from miplearn.types import TrainingSample
+
 
 class Instance(ABC):
     """
@@ -20,6 +22,9 @@ class Instance(ABC):
     into arrays of features, which can be provided as inputs to machine learning models.
     """
 
+    def __init__(self):
+        self.training_data: List[TrainingSample] = []
+
     @abstractmethod
     def to_model(self) -> Any:
         """