Method temporary_pycache_prefix

Lib/test/test_compileall.py:544–555

Adjust and restore sys.pycache_prefix.

(self)

    @contextlib.contextmanager
    def temporary_pycache_prefix(self):
        """Adjust and restore sys.pycache_prefix."""
        old_prefix = sys.pycache_prefix
        new_prefix = os.path.join(self.directory, '__testcache__')
        try:
            sys.pycache_prefix = new_prefix
            yield {
                'PYTHONPATH': self.directory,
                'PYTHONPYCACHEPREFIX': new_prefix,
            }
        finally:
            sys.pycache_prefix = old_prefix

    def _get_run_args(self, args):
        return [*support.optim_args_from_interpreter_flags(),