[GitHub] [airflow] jedcunningham commented on a change in pull request #20217: Lazy Jinja2 context

[GitBox <gi...@apache.org>]

jedcunningham commented on a change in pull request #20217:
URL: https://github.com/apache/airflow/pull/20217#discussion_r768025196



##########
File path: airflow/utils/context.py
##########
@@ -124,6 +142,11 @@ def __reduce_ex__(self, protocol: int) -> Tuple[Any, ...]:
         items = [(key, self[key]) for key in self._context]
         return dict, (items,)
 
+    def __copy__(self) -> "Context":
+        new = type(self)(copy.copy(self._context))
+        new._deprecation_replacements = self._deprecation_replacements.copy()
+        return new
+
     def __getitem__(self, key: str) -> Any:
         with contextlib.suppress(KeyError):
             warnings.warn(_create_deprecation_warning(key, self._deprecation_replacements[key]), stacklevel=2)

Review comment:
       ```suggestion
               warnings.warn(_create_deprecation_warning(key, self._deprecation_replacements[key]))
   ```
   
   This is the culprit, as it issues the warning from `jinja2/runtime.py:154` instead.




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