Fix old model checkpoints after #151 (fixes #156) (#157)

fairseq/models/fconv.py

@@ -57,6 +57,10 @@ class FConvModel(FairseqModel):
             args.max_target_positions = args.max_positions
         if not hasattr(args, 'share_input_output_embed'):
             args.share_input_output_embed = False
+        if not hasattr(args, 'encoder_embed_path'):
+            args.encoder_embed_path = None
+        if not hasattr(args, 'decoder_embed_path'):
+            args.decoder_embed_path = None
 
         encoder_embed_dict = None
         if args.encoder_embed_path:

fairseq/models/lstm.py

@@ -56,6 +56,10 @@ class LSTMModel(FairseqModel):
     @classmethod
     def build_model(cls, args, src_dict, dst_dict):
         """Build a new model instance."""
+        if not hasattr(args, 'encoder_embed_path'):
+            args.encoder_embed_path = None
+        if not hasattr(args, 'decoder_embed_path'):
+            args.decoder_embed_path = None
 
         encoder_embed_dict = None
         if args.encoder_embed_path: