Patched the serialization mechenism

bob/bio/face/extractor/DCTBlocks.py

@@ -140,7 +140,7 @@ class DCTBlocks(TransformerMixin, BaseEstimator):
         return self
 
     def __getstate__(self):
-        d = dict(self.__dict__)
+        d = self.__dict__.copy()
         d.pop("dct_features")
         return d
 

bob/bio/face/extractor/GridGraph.py

@@ -8,7 +8,7 @@ import bob.io.base
 import numpy
 import math
 from bob.bio.base.extractor import Extractor
-
+import copy
 
 class GridGraph(Extractor):
     """Extracts Gabor jets in a grid structure [GHW12]_ using functionalities from :ref:`bob.ip.gabor <bob.ip.gabor>`.
@@ -278,11 +278,12 @@ class GridGraph(Extractor):
         pass
 
     def __getstate__(self):
-        d = dict(self.__dict__)
+        d = self.__dict__.copy()
         d.pop("gwt")
         d.pop("_aligned_graph")
         if "_graph" in d:
             d.pop("_graph")
+
         return d
 
     def __setstate__(self, d):

bob/bio/face/extractor/LGBPHS.py

@@ -281,7 +281,7 @@ class LGBPHS(TransformerMixin, BaseEstimator):
             return _extract(X)
 
     def __getstate__(self):
-        d = dict(self.__dict__)
+        d = self.__dict__.copy()
         d.pop("lbp")
         d.pop("gwt")
         return d

bob/bio/face/preprocessor/FaceCrop.py

@@ -347,7 +347,7 @@ class FaceCrop(Base):
 
 
     def __getstate__(self):
-        d = dict(self.__dict__)
+        d = self.__dict__.copy()
         d.pop("mask_rng")
         d.pop("cropper")
         return d