Make pylint happier

src/operator_repo/checks/operator.py

@@ -19,5 +19,5 @@ def check_upgrade(operator: Operator) -> Iterator[CheckResult]:
                 yield Fail(
                     f"Channel {channel} has dangling bundles: {dangling_bundles}."
                 )
-        except Exception as e:
-            yield Fail(str(e))
+        except Exception as exc:
+            yield Fail(f"{operator}: {exc}")

src/operator_repo/cli.py

@@ -54,7 +54,7 @@ def _list(
             ("Replaces", target.csv.get("spec", {}).get("replaces", "")),
             ("Skips", target.csv.get("spec", {}).get("skips", [])),
         ]
-        max_width = max([len(key) for key, _ in info])
+        max_width = max(len(key) for key, _ in info)
         for key, value in info:
             message = f"{key.ljust(max_width+1)}: {value}"
             print(indent(depth + 1) + message)

src/operator_repo/utils.py

@@ -39,10 +39,12 @@ def _load_yaml_strict(path: Path) -> Any:
     with path.open("r") as yaml_file:
         try:
             return yaml.safe_load(yaml_file)
-        except ComposerError:
-            raise OperatorRepoException(f"{path} contains multiple yaml documents")
-        except ParserError:
-            raise OperatorRepoException(f"{path} is not a valid yaml document")
+        except ComposerError as exc:
+            raise OperatorRepoException(
+                f"{path} contains multiple yaml documents"
+            ) from exc
+        except ParserError as exc:
+            raise OperatorRepoException(f"{path} is not a valid yaml document") from exc
 
 
 def load_yaml(path: Path) -> Any: