def unset(self, pattern=None):
        self._tk.call('array', 'unset', str(self), pattern)
>>> make_url('some/path/program', ['arg1', 'arg2'], {'arg3': 4})
dataset/ETHPy150Open Arelle/Arelle/arelle/TkTableWrapper.py/ArrayVar.unset--crossover with--dataset/ETHPy150Open priestc/giotto/giotto/controllers/http.py/make_url