test_compileall.py 文件源码

def recreation_check(self, metadata):
        """Check that compileall recreates bytecode when the new metadata is
        used."""
        if not hasattr(os, 'stat'):
            return
        py_compile.compile(self.source_path)
        self.assertEqual(*self.data())
        with open(self.bc_path, 'rb') as file:
            bc = file.read()[len(metadata):]
        with open(self.bc_path, 'wb') as file:
            file.write(metadata)
            file.write(bc)
        self.assertNotEqual(*self.data())
        compileall.compile_dir(self.directory, force=False, quiet=True)
        self.assertTrue(*self.data())