Catch only KeyError when parsing enum

Author: tomgrin10

.gitignore

@@ -54,3 +54,6 @@ README.html
 .mypy_cache
 
 !tests/.env
+
+#IDEs
+.idea/

environs/__init__.py

@@ -183,8 +183,8 @@ def _preprocess_json(value: str, **kwargs):
 def _enum_parser(value, *, type: typing.Type[_EnumT], **kwargs) -> _EnumT:
     try:
         return type[value]
-    except Exception:
-        raise ma.ValidationError(f"Not a valid {type} enum.")
+    except KeyError:
+        raise ma.ValidationError(f"Not a valid '{type.__name__}' enum.")
 
 
 def _dj_db_url_parser(value: str, **kwargs) -> dict: