Improve stubtest error message (#15398)

python · Jun 8, 2023 · 27593bc · 27593bc
1 parent e253e76
commit 27593bc
Showing 1 changed file with 6 additions and 1 deletion.
diff --git a/mypy/stubtest.py b/mypy/stubtest.py
@@ -209,7 +209,12 @@ def test_module(module_name: str) -> Iterator[Error]:
  except KeyboardInterrupt:
  raise
  except BaseException as e:
- yield Error([module_name], f"failed to import, {type(e).__name__}: {e}", stub, MISSING)
+ note = ""
+ if isinstance(e, ModuleNotFoundError):
+ note = " Maybe install the runtime package or alter PYTHONPATH?"
+ yield Error(
+ [module_name], f"failed to import.{note} {type(e).__name__}: {e}", stub, MISSING
+ )
  return
 
  with warnings.catch_warnings():