Close #9075: autodoc: Add a config variable autodoc_unqualified_typehints

If autodoc_unqualified_typehints feature enabled, autodoc suppresses the
leading module names of typehints of function signatures (ex.
`io.StringIO` -> `StringIO`)

CHANGES

@@ -13,6 +13,9 @@ Deprecated
 Features added
 --------------
 
+* #9075: autodoc: Add a config variable :confval:`autodoc_unqualified_typehints`
+  to suppress the leading module names of typehints of function signatures (ex.
+  ``io.StringIO`` -> ``StringIO``)
 * #9831: Autosummary now documents only the members specified in a module's
   ``__all__`` attribute if :confval:`autosummary_ignore_module_all` is set to
   ``False``. The default behaviour is unchanged. Autogen also now supports

doc/usage/extensions/autodoc.rst

@@ -662,6 +662,13 @@ There are also config values that you can set:
    .. __: https://mypy.readthedocs.io/en/latest/kinds_of_types.html#type-aliases
    .. versionadded:: 3.3
 
+.. confval:: autodoc_unqualified_typehints
+
+   If True, the leading module names of typehints of function signatures (ex.
+   ``io.StringIO`` -> ``StringIO``).  Defaults to False.
+
+   .. versionadded:: 4.4
+
 .. confval:: autodoc_preserve_defaults
 
    If True, the default argument values of functions will be not evaluated on

sphinx/ext/autodoc/__init__.py

@@ -1295,6 +1295,8 @@ class FunctionDocumenter(DocstringSignatureMixin, ModuleLevelDocumenter):  # typ
     def format_args(self, **kwargs: Any) -> str:
         if self.config.autodoc_typehints in ('none', 'description'):
             kwargs.setdefault('show_annotation', False)
+        if self.config.autodoc_unqualified_typehints:
+            kwargs.setdefault('unqualified_typehints', True)
 
         try:
             self.env.app.emit('autodoc-before-process-signature', self.object, False)
@@ -1323,6 +1325,9 @@ class FunctionDocumenter(DocstringSignatureMixin, ModuleLevelDocumenter):  # typ
             self.add_line('   :async:', sourcename)
 
     def format_signature(self, **kwargs: Any) -> str:
+        if self.config.autodoc_unqualified_typehints:
+            kwargs.setdefault('unqualified_typehints', True)
+
         sigs = []
         if (self.analyzer and
                 '.'.join(self.objpath) in self.analyzer.overloads and
@@ -1561,6 +1566,8 @@ class ClassDocumenter(DocstringSignatureMixin, ModuleLevelDocumenter):  # type:
     def format_args(self, **kwargs: Any) -> str:
         if self.config.autodoc_typehints in ('none', 'description'):
             kwargs.setdefault('show_annotation', False)
+        if self.config.autodoc_unqualified_typehints:
+            kwargs.setdefault('unqualified_typehints', True)
 
         try:
             self._signature_class, self._signature_method_name, sig = self._get_signature()
@@ -1582,6 +1589,9 @@ class ClassDocumenter(DocstringSignatureMixin, ModuleLevelDocumenter):  # type:
             # do not show signatures
             return ''
 
+        if self.config.autodoc_unqualified_typehints:
+            kwargs.setdefault('unqualified_typehints', True)
+
         sig = super().format_signature()
         sigs = []
 
@@ -2110,6 +2120,8 @@ class MethodDocumenter(DocstringSignatureMixin, ClassLevelDocumenter):  # type:
     def format_args(self, **kwargs: Any) -> str:
         if self.config.autodoc_typehints in ('none', 'description'):
             kwargs.setdefault('show_annotation', False)
+        if self.config.autodoc_unqualified_typehints:
+            kwargs.setdefault('unqualified_typehints', True)
 
         try:
             if self.object == object.__init__ and self.parent != object:
@@ -2160,6 +2172,9 @@ class MethodDocumenter(DocstringSignatureMixin, ClassLevelDocumenter):  # type:
         pass
 
     def format_signature(self, **kwargs: Any) -> str:
+        if self.config.autodoc_unqualified_typehints:
+            kwargs.setdefault('unqualified_typehints', True)
+
         sigs = []
         if (self.analyzer and
                 '.'.join(self.objpath) in self.analyzer.overloads and
@@ -2833,6 +2848,7 @@ def setup(app: Sphinx) -> Dict[str, Any]:
     app.add_config_value('autodoc_typehints_description_target', 'all', True,
                          ENUM('all', 'documented'))
     app.add_config_value('autodoc_type_aliases', {}, True)
+    app.add_config_value('autodoc_unqualified_typehints', False, 'env')
     app.add_config_value('autodoc_warningiserror', True, True)
     app.add_config_value('autodoc_inherit_docstrings', True, True)
     app.add_event('autodoc-before-process-signature')

tests/test_ext_autodoc_configs.py

@@ -1142,6 +1142,99 @@ def test_autodoc_typehints_description_and_type_aliases(app):
             '      myint\n' == context)
 
 
+@pytest.mark.sphinx('html', testroot='ext-autodoc',
+                    confoverrides={'autodoc_unqualified_typehints': True})
+def test_autodoc_unqualified_typehints(app):
+    if sys.version_info < (3, 7):
+        Any = 'Any'
+    else:
+        Any = '~typing.Any'
+
+    options = {"members": None,
+               "undoc-members": None}
+    actual = do_autodoc(app, 'module', 'target.typehints', options)
+    assert list(actual) == [
+        '',
+        '.. py:module:: target.typehints',
+        '',
+        '',
+        '.. py:data:: CONST1',
+        '   :module: target.typehints',
+        '   :type: int',
+        '',
+        '',
+        '.. py:class:: Math(s: str, o: ~typing.Optional[%s] = None)' % Any,
+        '   :module: target.typehints',
+        '',
+        '',
+        '   .. py:attribute:: Math.CONST1',
+        '      :module: target.typehints',
+        '      :type: int',
+        '',
+        '',
+        '   .. py:attribute:: Math.CONST2',
+        '      :module: target.typehints',
+        '      :type: int',
+        '      :value: 1',
+        '',
+        '',
+        '   .. py:method:: Math.decr(a: int, b: int = 1) -> int',
+        '      :module: target.typehints',
+        '',
+        '',
+        '   .. py:method:: Math.horse(a: str, b: int) -> None',
+        '      :module: target.typehints',
+        '',
+        '',
+        '   .. py:method:: Math.incr(a: int, b: int = 1) -> int',
+        '      :module: target.typehints',
+        '',
+        '',
+        '   .. py:method:: Math.nothing() -> None',
+        '      :module: target.typehints',
+        '',
+        '',
+        '   .. py:property:: Math.prop',
+        '      :module: target.typehints',
+        '      :type: int',
+        '',
+        '',
+        '.. py:class:: NewAnnotation(i: int)',
+        '   :module: target.typehints',
+        '',
+        '',
+        '.. py:class:: NewComment(i: int)',
+        '   :module: target.typehints',
+        '',
+        '',
+        '.. py:class:: SignatureFromMetaclass(a: int)',
+        '   :module: target.typehints',
+        '',
+        '',
+        '.. py:function:: complex_func(arg1: str, arg2: List[int], arg3: Tuple[int, '
+        'Union[str, Unknown]] = None, *args: str, **kwargs: str) -> None',
+        '   :module: target.typehints',
+        '',
+        '',
+        '.. py:function:: decr(a: int, b: int = 1) -> int',
+        '   :module: target.typehints',
+        '',
+        '',
+        '.. py:function:: incr(a: int, b: int = 1) -> int',
+        '   :module: target.typehints',
+        '',
+        '',
+        '.. py:function:: missing_attr(c, a: str, b: Optional[str] = None) -> str',
+        '   :module: target.typehints',
+        '',
+        '',
+        '.. py:function:: tuple_args(x: ~typing.Tuple[int, ~typing.Union[int, str]]) '
+        '-> ~typing.Tuple[int, int]',
+        '   :module: target.typehints',
+        '',
+    ]
+
+
 @pytest.mark.sphinx('html', testroot='ext-autodoc')
 def test_autodoc_default_options(app):
     # no settings