missing file

jwdevantier · Jul 6, 2022 · d3e6243 · d3e6243
1 parent b23c4c5
commit d3e6243
Showing 1 changed file with 10 additions and 0 deletions.
diff --git a/gcgen/excbase.py b/gcgen/excbase.py
@@ -0,0 +1,10 @@
+from abc import ABC, abstractmethod
+
+
+class GcgenError(ABC, Exception):
+    @abstractmethod
+    def printerr(self) -> None:
+        """Print message for end-user."""
+        raise NotImplementedError(
+            f"{self.__module__}.{type(self).__qualname__} does not implement `printerr`"
+        )