--- Lib/importlib/_bootstrap.py.fix-handling-of-readonly-pyc-files 2009-10-22 15:24:57.575015046 -0400 +++ Lib/importlib/_bootstrap.py 2009-10-22 15:25:24.024016069 -0400 @@ -522,8 +522,8 @@ class _PyPycFileLoader(PyPycLoader, _PyF bytecode_path = self.bytecode_path(name) if not bytecode_path: bytecode_path = self._base_path + _suffix_list(imp.PY_COMPILED)[0] - file = _io.FileIO(bytecode_path, 'w') # Assuming bytes. try: + file = _io.FileIO(bytecode_path, 'w') # Assuming bytes. with _closing(file) as bytecode_file: bytecode_file.write(data) return True