fix the pickling error for IO objects

common-workflow-language · Oct 18, 2023 · d2ebdf0 · d2ebdf0
1 parent ec9c898
commit d2ebdf0
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/cwltool/context.py b/cwltool/context.py
@@ -199,7 +199,7 @@ def __init__(self, kwargs: Optional[Dict[str, Any]] = None) -> None:
         self.default_stdout: Optional[Union[IO[bytes], TextIO]] = None
         self.default_stderr: Optional[Union[IO[bytes], TextIO]] = None
         self.validate_only: bool = False
-        self.validate_stdout: Union[IO[bytes], TextIO, IO[str]] = sys.stdout
+        self.validate_stdout: Optional[Union[IO[bytes], TextIO, IO[str]]] = None
         super().__init__(kwargs)
         if self.tmp_outdir_prefix == "":
             self.tmp_outdir_prefix = self.tmpdir_prefix