remove unnecessary generators (C400, C401)

1 files changed, 2 insertions, 2 deletions

diff --git a/sphinx/ext/autosummary/generate.py b/sphinx/ext/autosummary/generate.py
index 5d5e64b92..0e1daf79a 100644
--- a/sphinx/ext/autosummary/generate.py
+++ b/sphinx/ext/autosummary/generate.py
@@ -404,7 +404,7 @@ def generate_autosummary_docs(sources: List[str], output_dir: str = None,
                 else:
                     exceptions = exc.exceptions + [exc2]
 
-                errors = list(set("* %s: %s" % (type(e).__name__, e) for e in exceptions))
+                errors = list({"* %s: %s" % (type(e).__name__, e) for e in exceptions})
                 logger.warning(__('[autosummary] failed to import %s.\nPossible hints:\n%s'),
                                entry.name, '\n'.join(errors))
                 continue
@@ -468,7 +468,7 @@ def find_autosummary_in_docstring(name: str, filename: str = None) -> List[Autos
     except AttributeError:
         pass
     except ImportExceptionGroup as exc:
-        errors = list(set("* %s: %s" % (type(e).__name__, e) for e in exc.exceptions))
+        errors = list({"* %s: %s" % (type(e).__name__, e) for e in exc.exceptions})
         print('Failed to import %s.\nPossible hints:\n%s' % (name, '\n'.join(errors)))
     except SystemExit:
         print("Failed to import '%s'; the module executes module level "