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authorVictor Stinner <vstinner@python.org>2021-04-30 10:46:15 (GMT)
committerGitHub <noreply@github.com>2021-04-30 10:46:15 (GMT)
commit3bb09947ec4837de75532e21dd4bd25db0a1f1b7 (patch)
tree46469716b18eda1c8af7c311b6187fda39a146c1 /Misc
parentb73b5fb9ea08156991a065c1696e8d8cf7622482 (diff)
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bpo-43916: Add Py_TPFLAGS_DISALLOW_INSTANTIATION type flag (GH-25721)
Add a new Py_TPFLAGS_DISALLOW_INSTANTIATION type flag to disallow creating type instances: set tp_new to NULL and don't create the "__new__" key in the type dictionary. The flag is set automatically on static types if tp_base is NULL or &PyBaseObject_Type and tp_new is NULL. Use the flag on the following types: * _curses.ncurses_version type * _curses_panel.panel * _tkinter.Tcl_Obj * _tkinter.tkapp * _tkinter.tktimertoken * _xxsubinterpretersmodule.ChannelID * sys.flags type * sys.getwindowsversion() type * sys.version_info type Update MyStr example in the C API documentation to use Py_TPFLAGS_DISALLOW_INSTANTIATION. Add _PyStructSequence_InitType() function to create a structseq type with the Py_TPFLAGS_DISALLOW_INSTANTIATION flag set. type_new() calls _PyType_CheckConsistency() at exit.
Diffstat (limited to 'Misc')
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+Add a new :c:data:`Py_TPFLAGS_DISALLOW_INSTANTIATION` type flag to disallow
+creating type instances. Patch by Victor Stinner.