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gh-122188: Remove _imp.pyc_magic_number #122503

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Merged
merged 1 commit into from
Aug 2, 2024
Merged

gh-122188: Remove _imp.pyc_magic_number #122503

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2 changes: 1 addition & 1 deletion Lib/importlib/_bootstrap_external.py
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Original file line number Diff line number Diff line change
Expand Up @@ -221,7 +221,7 @@ def _write_atomic(path, data, mode=0o666):

_code_type = type(_write_atomic.__code__)

MAGIC_NUMBER = (_imp.pyc_magic_number).to_bytes(2, 'little') + b'\r\n'
MAGIC_NUMBER = _imp.pyc_magic_number_token.to_bytes(4, 'little')

_PYCACHE = '__pycache__'
_OPT = 'opt-'
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10 changes: 6 additions & 4 deletions Lib/test/test_import/__init__.py
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Expand Up @@ -3116,10 +3116,12 @@ def test_pyimport_addmodule_create(self):
@cpython_only
class TestMagicNumber(unittest.TestCase):
def test_magic_number_endianness(self):
magic_number = (_imp.pyc_magic_number).to_bytes(2, 'little') + b'\r\n'
raw_magic_number = int.from_bytes(magic_number, 'little')

self.assertEqual(raw_magic_number, _imp.pyc_magic_number_token)
magic_number_bytes = _imp.pyc_magic_number_token.to_bytes(4, 'little')
self.assertEqual(magic_number_bytes[2:], b'\r\n')
# Starting with Python 3.11, Python 3.n starts with magic number 2900+50n.
magic_number = int.from_bytes(magic_number_bytes[:2], 'little')
start = 2900 + sys.version_info.minor * 50
self.assertIn(magic_number, range(start, start + 50))


if __name__ == '__main__':
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6 changes: 1 addition & 5 deletions Python/import.c
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Expand Up @@ -6,7 +6,7 @@
#include "pycore_import.h" // _PyImport_BootstrapImp()
#include "pycore_initconfig.h" // _PyStatus_OK()
#include "pycore_interp.h" // struct _import_runtime_state
#include "pycore_magic_number.h" // PYC_MAGIC_NUMBER
#include "pycore_magic_number.h" // PYC_MAGIC_NUMBER_TOKEN
#include "pycore_namespace.h" // _PyNamespace_Type
#include "pycore_object.h" // _Py_SetImmortal()
#include "pycore_pyerrors.h" // _PyErr_SetString()
Expand Down Expand Up @@ -4810,10 +4810,6 @@ imp_module_exec(PyObject *module)
return -1;
}

if (PyModule_AddIntConstant(module, "pyc_magic_number", PYC_MAGIC_NUMBER) < 0) {
return -1;
}

if (PyModule_AddIntConstant(
module, "pyc_magic_number_token", PYC_MAGIC_NUMBER_TOKEN) < 0)
{
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