gh-99735: Use required=True in argparse subparsers example (#100927)

diff --git a/Doc/library/argparse.rst b/Doc/library/argparse.rst
index dbaa5d0d9b995b920e38857d83e2664ba908b24d..34b4c61649b99f422346e5a9a1643e2bf70ac652 100644 (file)
--- a/Doc/library/argparse.rst
+++ b/Doc/library/argparse.rst
@@ -1867,7 +1867,7 @@ Sub-commands
      ...
      >>> # create the top-level parser
      >>> parser = argparse.ArgumentParser()
-     >>> subparsers = parser.add_subparsers()
+     >>> subparsers = parser.add_subparsers(required=True)
      >>>
      >>> # create the parser for the "foo" command
      >>> parser_foo = subparsers.add_parser('foo')