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-rw-r--r--Lib/tkinter/__init__.py6
-rw-r--r--Lib/tkinter/test/test_tkinter/test_misc.py7
-rw-r--r--Misc/NEWS.d/next/Library/2021-06-20-19-01-11.bpo-44404.McfrYB.rst1
3 files changed, 13 insertions, 1 deletions
diff --git a/Lib/tkinter/__init__.py b/Lib/tkinter/__init__.py
index 369004c..2513c97 100644
--- a/Lib/tkinter/__init__.py
+++ b/Lib/tkinter/__init__.py
@@ -841,7 +841,11 @@ class Misc:
self.deletecommand(name)
except TclError:
pass
- callit.__name__ = func.__name__
+ try:
+ callit.__name__ = func.__name__
+ except AttributeError:
+ # Required for callable classes (bpo-44404)
+ callit.__name__ = type(func).__name__
name = self._register(callit)
return self.tk.call('after', ms, name)
diff --git a/Lib/tkinter/test/test_tkinter/test_misc.py b/Lib/tkinter/test/test_tkinter/test_misc.py
index d4b7cbd..ab8f647 100644
--- a/Lib/tkinter/test/test_tkinter/test_misc.py
+++ b/Lib/tkinter/test/test_tkinter/test_misc.py
@@ -1,3 +1,4 @@
+import functools
import unittest
import tkinter
import enum
@@ -98,6 +99,12 @@ class MiscTest(AbstractTkTest, unittest.TestCase):
with self.assertRaises(tkinter.TclError):
root.tk.call(script)
+ # Call with a callable class
+ count = 0
+ timer1 = root.after(0, functools.partial(callback, 42, 11))
+ root.update() # Process all pending events.
+ self.assertEqual(count, 53)
+
def test_after_idle(self):
root = self.root
diff --git a/Misc/NEWS.d/next/Library/2021-06-20-19-01-11.bpo-44404.McfrYB.rst b/Misc/NEWS.d/next/Library/2021-06-20-19-01-11.bpo-44404.McfrYB.rst
new file mode 100644
index 0000000..ff6ca1b
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2021-06-20-19-01-11.bpo-44404.McfrYB.rst
@@ -0,0 +1 @@
+:mod:`tkinter`'s ``after()`` method now supports callables without the ``__name__`` attribute.