Fix closes issue12663 - Correcting the ArgumentParser.error description. Patch by Sandro Tosi.
diff --git a/Doc/library/argparse.rst b/Doc/library/argparse.rst
index 3db8fec..e4add74 100644
--- a/Doc/library/argparse.rst
+++ b/Doc/library/argparse.rst
@@ -1778,7 +1778,7 @@
.. method:: ArgumentParser.error(message)
This method prints a usage message including the *message* to the
- standard output and terminates the program with a status code of 2.
+ standard error and terminates the program with a status code of 2.
.. _upgrading-optparse-code: