bpo-34966: Improve support of method aliases in pydoc. (GH-9823)
Pydoc now does not duplicate docstrings for aliases of inherited methods.
(cherry picked from commit a44d34e17908a49d584f86c4f8642a50707b7150)
Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
diff --git a/Lib/pydoc.py b/Lib/pydoc.py
index 8a6b27b..09992cd 100644
--- a/Lib/pydoc.py
+++ b/Lib/pydoc.py
@@ -958,8 +958,7 @@
if name == realname:
title = '<a name="%s"><strong>%s</strong></a>' % (anchor, realname)
else:
- if (cl and realname in cl.__dict__ and
- cl.__dict__[realname] is object):
+ if cl and inspect.getattr_static(cl, realname, []) is object:
reallink = '<a href="#%s">%s</a>' % (
cl.__name__ + '-' + realname, realname)
skipdocs = 1
@@ -1375,8 +1374,7 @@
if name == realname:
title = self.bold(realname)
else:
- if (cl and realname in cl.__dict__ and
- cl.__dict__[realname] is object):
+ if cl and inspect.getattr_static(cl, realname, []) is object:
skipdocs = 1
title = self.bold(name) + ' = ' + realname
argspec = None
diff --git a/Lib/test/test_pydoc.py b/Lib/test/test_pydoc.py
index 06f8729..9bf365e 100644
--- a/Lib/test/test_pydoc.py
+++ b/Lib/test/test_pydoc.py
@@ -417,6 +417,7 @@
class PydocDocTest(unittest.TestCase):
+ maxDiff = None
@unittest.skipIf(sys.flags.optimize >= 2,
"Docstrings are omitted with -O2 and above")
@@ -648,6 +649,104 @@
methods = pydoc.allmethods(TestClass)
self.assertDictEqual(methods, expected)
+ def test_method_aliases(self):
+ class A:
+ def tkraise(self, aboveThis=None):
+ """Raise this widget in the stacking order."""
+ lift = tkraise
+ def a_size(self):
+ """Return size"""
+ class B(A):
+ def itemconfigure(self, tagOrId, cnf=None, **kw):
+ """Configure resources of an item TAGORID."""
+ itemconfig = itemconfigure
+ b_size = A.a_size
+
+ doc = pydoc.render_doc(B)
+ # clean up the extra text formatting that pydoc performs
+ doc = re.sub('\b.', '', doc)
+ self.assertEqual(doc, '''\
+Python Library Documentation: class B in module %s
+
+class B(A)
+ | Method resolution order:
+ | B
+ | A
+ | builtins.object
+ |\x20\x20
+ | Methods defined here:
+ |\x20\x20
+ | b_size = a_size(self)
+ |\x20\x20
+ | itemconfig = itemconfigure(self, tagOrId, cnf=None, **kw)
+ |\x20\x20
+ | itemconfigure(self, tagOrId, cnf=None, **kw)
+ | Configure resources of an item TAGORID.
+ |\x20\x20
+ | ----------------------------------------------------------------------
+ | Methods inherited from A:
+ |\x20\x20
+ | a_size(self)
+ | Return size
+ |\x20\x20
+ | lift = tkraise(self, aboveThis=None)
+ |\x20\x20
+ | tkraise(self, aboveThis=None)
+ | Raise this widget in the stacking order.
+ |\x20\x20
+ | ----------------------------------------------------------------------
+ | Data descriptors inherited from A:
+ |\x20\x20
+ | __dict__
+ | dictionary for instance variables (if defined)
+ |\x20\x20
+ | __weakref__
+ | list of weak references to the object (if defined)
+''' % __name__)
+
+ doc = pydoc.render_doc(B, renderer=pydoc.HTMLDoc())
+ self.assertEqual(doc, '''\
+Python Library Documentation: class B in module %s
+
+<p>
+<table width="100%%" cellspacing=0 cellpadding=2 border=0 summary="section">
+<tr bgcolor="#ffc8d8">
+<td colspan=3 valign=bottom> <br>
+<font color="#000000" face="helvetica, arial"><a name="B">class <strong>B</strong></a>(A)</font></td></tr>
+\x20\x20\x20\x20
+<tr><td bgcolor="#ffc8d8"><tt> </tt></td><td> </td>
+<td width="100%%"><dl><dt>Method resolution order:</dt>
+<dd>B</dd>
+<dd>A</dd>
+<dd><a href="builtins.html#object">builtins.object</a></dd>
+</dl>
+<hr>
+Methods defined here:<br>
+<dl><dt><a name="B-b_size"><strong>b_size</strong></a> = <a href="#B-a_size">a_size</a>(self)</dt></dl>
+
+<dl><dt><a name="B-itemconfig"><strong>itemconfig</strong></a> = <a href="#B-itemconfigure">itemconfigure</a>(self, tagOrId, cnf=None, **kw)</dt></dl>
+
+<dl><dt><a name="B-itemconfigure"><strong>itemconfigure</strong></a>(self, tagOrId, cnf=None, **kw)</dt><dd><tt>Configure resources of an item TAGORID.</tt></dd></dl>
+
+<hr>
+Methods inherited from A:<br>
+<dl><dt><a name="B-a_size"><strong>a_size</strong></a>(self)</dt><dd><tt>Return size</tt></dd></dl>
+
+<dl><dt><a name="B-lift"><strong>lift</strong></a> = <a href="#B-tkraise">tkraise</a>(self, aboveThis=None)</dt></dl>
+
+<dl><dt><a name="B-tkraise"><strong>tkraise</strong></a>(self, aboveThis=None)</dt><dd><tt>Raise this widget in the stacking order.</tt></dd></dl>
+
+<hr>
+Data descriptors inherited from A:<br>
+<dl><dt><strong>__dict__</strong></dt>
+<dd><tt>dictionary for instance variables (if defined)</tt></dd>
+</dl>
+<dl><dt><strong>__weakref__</strong></dt>
+<dd><tt>list of weak references to the object (if defined)</tt></dd>
+</dl>
+</td></tr></table>\
+''' % __name__)
+
class PydocImportTest(PydocBaseTest):