Ticket #23133: basecommand_check_stderr.diff

django/core/management/base.py

@@ -487 +487 @@
         if any(e.is_serious() and not e.is_silenced() for e in all_issues):
             raise CommandError(msg)
         elif msg and visible_issue_count:
-            self.stderr.write(msg)
+            # self.stderr is not guaranteed to be set here
+            stderr = getattr(self, 'stderr', OutputWrapper(sys.stderr, self.style.ERROR))
+            stderr.write(msg)
+
         elif msg:
-            self.stdout.write(msg)
+            # self.stdout is not guaranteed to be set here
+            stdout = getattr(self, 'stdout', OutputWrapper(sys.stdout))
+            stdout.write(msg)
 
     def handle(self, *args, **options):
         """