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Bytecode parity by youknowone · Pull Request #7541 · RustPython/RustPython · GitHub
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Bytecode parity #7541

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Merged
youknowone merged 1 commit into from
Mar 31, 2026
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Bytecode parity #7541

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Improve codegen bytecode parity 
- Add CFG block splitting, jump threading, backward jump normalization
- Add genexpr StopIteration wrapper
- Add ConstantData::Slice and constant slice folding
- Add duplicate_exits_without_lineno and Block: Clone
- Add builtin(genexpr) optimization for tuple/list/set/all/any
- Add compile_try_except_no_finally for try-except without finally
- Add module_name_declared_global_in_nested_scope
- Add constant tuple folding in try_fold_constant_expr
- Add fstring literal-only optimization and empty literal elision
- Fix duplicate_exits_without_lineno: splice new blocks into linked list
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@youknowone
youknowone committed Mar 31, 2026
commit ca6e56ae3a36b7362fd23586d1e6c7a59b918ef1
1 change: 0 additions & 1 deletion Lib/test/test_monitoring.py
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Expand Up @@ -1261,7 +1261,6 @@ def func2():
('instruction', 'func2', 46),
('line', 'get_events', 11)])

@unittest.expectedFailure # TODO: RUSTPYTHON; - instruction offsets differ from CPython
def test_try_except(self):

def func3():
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1 change: 0 additions & 1 deletion Lib/test/test_scope.py
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Expand Up @@ -692,7 +692,6 @@ def dec(self):
self.assertEqual(c.dec(), 1)
self.assertEqual(c.dec(), 0)

@unittest.expectedFailure # TODO: RUSTPYTHON; figure out how to communicate that `y = 9` should be stored as a global rather than a STORE_NAME, even when the `global y` is in a nested subscope
def testGlobalInParallelNestedFunctions(self):
# A symbol table bug leaked the global statement from one
# function to other nested functions in the same block.
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