Method get_hash

Lib/test/test_hash.py:177–189

(self, repr_, seed=None)

        return 'print(hash(eval(%a)))' % repr_

    def get_hash(self, repr_, seed=None):
        env = os.environ.copy()
        env['__cleanenv'] = True  # signal to assert_python not to do a copy
                                  # of os.environ on its own
        if seed is not None:
            env['PYTHONHASHSEED'] = str(seed)
        else:
            env.pop('PYTHONHASHSEED', None)
        out = assert_python_ok(
            '-c', self.get_hash_command(repr_),
            **env)
        stdout = out[1].strip()
        return int(stdout)

    def test_randomized_hash(self):
        # two runs should return different hashes