gh-134109: Fix showing comments in pydoc output for argparse (GH-134110)

Comments immediately preceding the object's source code are used
if the object has no docstring.
Comments that do not describe the object should be separated from
the following source code by an empty line.

diff --git a/Lib/argparse.py b/Lib/argparse.py
index f688c38d0d1ae560179d911765c02ac06c64744c..d1a6350c3fda6d324c826192672e3df3ff877f8e 100644 (file)
--- a/Lib/argparse.py
+++ b/Lib/argparse.py
@@ -205,6 +205,7 @@ class HelpFormatter(object):
     # ===============================
     # Section and indentation methods
     # ===============================
+
     def _indent(self):
         self._current_indent += self._indent_increment
         self._level += 1
@@ -256,6 +257,7 @@ class HelpFormatter(object):
     # ========================
     # Message building methods
     # ========================
+
     def start_section(self, heading):
         self._indent()
         section = self._Section(self, self._current_section, heading)
@@ -299,6 +301,7 @@ class HelpFormatter(object):
     # =======================
     # Help-formatting methods
     # =======================
+
     def format_help(self):
         help = self._root_section.format_help()
         if help:
@@ -1467,6 +1470,7 @@ class _ActionsContainer(object):
     # ====================
     # Registration methods
     # ====================
+
     def register(self, registry_name, value, object):
         registry = self._registries.setdefault(registry_name, {})
         registry[value] = object
@@ -1477,6 +1481,7 @@ class _ActionsContainer(object):
     # ==================================
     # Namespace default accessor methods
     # ==================================
+
     def set_defaults(self, **kwargs):
         self._defaults.update(kwargs)
 
@@ -1496,6 +1501,7 @@ class _ActionsContainer(object):
     # =======================
     # Adding argument actions
     # =======================
+
     def add_argument(self, *args, **kwargs):
         """
         add_argument(dest, ..., name=value, ...)
@@ -1921,6 +1927,7 @@ class ArgumentParser(_AttributeHolder, _ActionsContainer):
     # =======================
     # Pretty __repr__ methods
     # =======================
+
     def _get_kwargs(self):
         names = [
             'prog',
@@ -1935,6 +1942,7 @@ class ArgumentParser(_AttributeHolder, _ActionsContainer):
     # ==================================
     # Optional/Positional adding methods
     # ==================================
+
     def add_subparsers(self, **kwargs):
         if self._subparsers is not None:
             raise ValueError('cannot have multiple subparser arguments')
@@ -1988,6 +1996,7 @@ class ArgumentParser(_AttributeHolder, _ActionsContainer):
     # =====================================
     # Command line argument parsing methods
     # =====================================
+
     def parse_args(self, args=None, namespace=None):
         args, argv = self.parse_known_args(args, namespace)
         if argv:
@@ -2582,6 +2591,7 @@ class ArgumentParser(_AttributeHolder, _ActionsContainer):
     # ========================
     # Value conversion methods
     # ========================
+
     def _get_values(self, action, arg_strings):
         # optional argument produces a default when not present
         if not arg_strings and action.nargs == OPTIONAL:
@@ -2681,6 +2691,7 @@ class ArgumentParser(_AttributeHolder, _ActionsContainer):
     # =======================
     # Help-formatting methods
     # =======================
+
     def format_usage(self):
         formatter = self._get_formatter()
         formatter.add_usage(self.usage, self._actions,
@@ -2718,6 +2729,7 @@ class ArgumentParser(_AttributeHolder, _ActionsContainer):
     # =====================
     # Help-printing methods
     # =====================
+
     def print_usage(self, file=None):
         if file is None:
             file = _sys.stdout
@@ -2739,6 +2751,7 @@ class ArgumentParser(_AttributeHolder, _ActionsContainer):
     # ===============
     # Exiting methods
     # ===============
+
     def exit(self, status=0, message=None):
         if message:
             self._print_message(message, _sys.stderr)