legacy test working on TensorMaps

tfields/core.py

@@ -153,6 +153,7 @@ class AbstractObject(object):
 
         """
         content_dict = self._as_dict()
+        content_dict['tfields_version'] = tfields.__version__
         np.savez(path, **content_dict)
 
     @classmethod
@@ -165,7 +166,9 @@ class AbstractObject(object):
         # wheter we could avoid pickling (potential security issue)
         load_kwargs.setdefault('allow_pickle', True)
         np_file = np.load(path, **load_kwargs)
-        return cls._from_dict(dict(np_file))
+        d = dict(np_file)
+        d.pop('tfields_version', None)
+        return cls._from_dict(d)
 
     def _args(self) -> tuple:
         return tuple()