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bpo-41304: Ensure python3x._pth is loaded on Windows (GH-21495)
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@ -598,12 +598,19 @@ def test_startup_interactivehook_isolated_explicit(self):
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@unittest.skipUnless(sys.platform == 'win32', "only supported on Windows")
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class _pthFileTests(unittest.TestCase):
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def _create_underpth_exe(self, lines):
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def _create_underpth_exe(self, lines, exe_pth=True):
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import _winapi
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temp_dir = tempfile.mkdtemp()
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self.addCleanup(test.support.rmtree, temp_dir)
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exe_file = os.path.join(temp_dir, os.path.split(sys.executable)[1])
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dll_src_file = _winapi.GetModuleFileName(sys.dllhandle)
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dll_file = os.path.join(temp_dir, os.path.split(dll_src_file)[1])
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shutil.copy(sys.executable, exe_file)
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_pth_file = os.path.splitext(exe_file)[0] + '._pth'
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shutil.copy(dll_src_file, dll_file)
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if exe_pth:
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_pth_file = os.path.splitext(exe_file)[0] + '._pth'
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else:
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_pth_file = os.path.splitext(dll_file)[0] + '._pth'
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with open(_pth_file, 'w') as f:
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for line in lines:
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print(line, file=f)
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@ -671,5 +678,30 @@ def test_underpth_file(self):
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self.assertTrue(rc, "sys.path is incorrect")
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def test_underpth_dll_file(self):
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libpath = os.path.dirname(os.path.dirname(encodings.__file__))
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exe_prefix = os.path.dirname(sys.executable)
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exe_file = self._create_underpth_exe([
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'fake-path-name',
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*[libpath for _ in range(200)],
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'',
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'# comment',
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'import site'
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], exe_pth=False)
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sys_prefix = os.path.dirname(exe_file)
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env = os.environ.copy()
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env['PYTHONPATH'] = 'from-env'
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env['PATH'] = '{};{}'.format(exe_prefix, os.getenv('PATH'))
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rc = subprocess.call([exe_file, '-c',
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'import sys; sys.exit(not sys.flags.no_site and '
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'%r in sys.path and %r in sys.path and %r not in sys.path and '
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'all("\\r" not in p and "\\n" not in p for p in sys.path))' % (
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os.path.join(sys_prefix, 'fake-path-name'),
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libpath,
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os.path.join(sys_prefix, 'from-env'),
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)], env=env)
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self.assertTrue(rc, "sys.path is incorrect")
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if __name__ == "__main__":
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unittest.main()
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@ -0,0 +1 @@
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Fixes `python3x._pth` being ignored on Windows
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@ -669,7 +669,7 @@ static int
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get_pth_filename(PyCalculatePath *calculate, wchar_t *filename,
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const _PyPathConfig *pathconfig)
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{
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if (get_dllpath(filename) &&
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if (!get_dllpath(filename) &&
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!change_ext(filename, filename, L"._pth") &&
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exists(filename))
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{
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