Add builtin.PythonFinalizationError (RustPython#7966)

ShaharNaveh · web-flow · commit 7011942e4ead · 2026-05-24T19:58:16.000+09:00
* Add PythonFinalizationError to builtins

* Patch failing tests (unrelated)

* Unmark passing test

* Update `exception_hierarchy.txt` to 3.14.5
diff --git a/Lib/test/exception_hierarchy.txt b/Lib/test/exception_hierarchy.txt
@@ -40,6 +40,7 @@ BaseException
       ├── ReferenceError
       ├── RuntimeError
       │    ├── NotImplementedError
+      │    ├── PythonFinalizationError
       │    └── RecursionError
       ├── StopAsyncIteration
       ├── StopIteration
diff --git a/Lib/test/test_builtin.py b/Lib/test/test_builtin.py
@@ -2696,6 +2696,7 @@ def detach_readline(self):
         else:
             yield
 
+    @unittest.expectedFailure  # TODO: RUSTPYTHON; AssertionError: got 0 lines in pipe but expected 2, child output was: quux
     def test_input_tty(self):
         # Test input() functionality when wired to a tty
         self.check_input_tty("prompt", b"quux")
@@ -2710,17 +2711,20 @@ def test_input_tty_non_ascii_unicode_errors(self):
         # Check stdin/stdout error handler is used when invoking PyOS_Readline()
         self.check_input_tty("prompté", b"quux\xe9", "ascii")
 
+    @unittest.expectedFailure  # TODO: RUSTPYTHON; AssertionError: got 0 lines in pipe but expected 2, child output was: quux
     def test_input_tty_null_in_prompt(self):
         self.check_input_tty("prompt\0", b"",
                 expected='ValueError: input: prompt string cannot contain '
                          'null characters')
 
+    @unittest.expectedFailure  # TODO: RUSTPYTHON; AssertionError: got 0 lines in pipe but expected 2, child output was: quux
     def test_input_tty_nonencodable_prompt(self):
         self.check_input_tty("prompté", b"quux", "ascii", stdout_errors='strict',
                 expected="UnicodeEncodeError: 'ascii' codec can't encode "
                          "character '\\xe9' in position 6: ordinal not in "
                          "range(128)")
 
+    @unittest.expectedFailure  # TODO: RUSTPYTHON; AssertionError: got 0 lines in pipe but expected 2, child output was: quux
     def test_input_tty_nondecodable_input(self):
         self.check_input_tty("prompt", b"quux\xe9", "ascii", stdin_errors='strict',
                 expected="UnicodeDecodeError: 'ascii' codec can't decode "
diff --git a/Lib/test/test_pickle.py b/Lib/test/test_pickle.py
@@ -775,7 +775,6 @@ def test_reverse_name_mapping(self):
                 module, name = mapping(module, name)
                 self.assertEqual((module, name), (module3, name3))
 
-    @unittest.expectedFailure  # TODO: RUSTPYTHON
     def test_exceptions(self):
         self.assertEqual(mapping('exceptions', 'StandardError'),
                          ('builtins', 'Exception'))
diff --git a/crates/vm/src/stdlib/builtins.rs b/crates/vm/src/stdlib/builtins.rs
@@ -1474,6 +1474,7 @@ pub fn init_module(vm: &VirtualMachine, module: &Py<PyModule>) {
         "TimeoutError" => ctx.exceptions.timeout_error.to_owned(),
         "ReferenceError" => ctx.exceptions.reference_error.to_owned(),
         "RuntimeError" => ctx.exceptions.runtime_error.to_owned(),
+        "PythonFinalizationError" => ctx.exceptions.python_finalization_error.to_owned(),
         "NotImplementedError" => ctx.exceptions.not_implemented_error.to_owned(),
         "RecursionError" => ctx.exceptions.recursion_error.to_owned(),
         "SyntaxError" =>  ctx.exceptions.syntax_error.to_owned(),
