Prevent from changing the interface specification once set.

Summary: Prevent from changing the interface specification once set. fbshipit-source-id: 123600ed4f2bf7148d46c8e3cf6dfe0d34908546
facebookresearch · Sep 3, 2020 · a7b84d5 · a7b84d5
1 parent 23c5ee5
commit a7b84d5
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/pytext/torchscript/module.py b/pytext/torchscript/module.py
@@ -150,6 +150,8 @@ def inference_interface(self, argument_type: str):
         # LANGUAGES = 3
         # DENSE_FEAT = 4
 
+        if (sel.argno != -1):
+            raise RuntimeError("Cannot change argument type.")
         if argument_type == "texts":
             self.argno = TEXTS
         else: