human
Solve the following python programming problem given the following code:
@ pytest.mark.parametrize ('arg_count', [1, 2, 4]) 
def test_unique_type(self, arg_count) : 
    class TestClass (object) : 
        __metaclass__ = UniqueType 
        def __init__(self, * args) : 
            self.args = args 
argset = set () 
    instances = [] 
    for i in xrange (50) : 
        args = tuple ((randint (0, 4) for i in xrange (randint (0, arg_count)))) 
        argset.add (args) 
        instance = TestClass (* args) 
        assert hasattr (instance, 'args') 
        assert (instance.args == args) 
        instances.append (instance) 
for args in argset : 
        argid = id (TestClass (* args)) 
        assert all (((id (instance) == argid) for instance in instances if (instance.args == argid))) 

    
    

    Fix the buggy line: assert all (((id (instance) == argid) for instance in instances if (instance.args == argid)))
assistant
#Here is Python code to fix the buggy line: assert all (((id (instance) == argid) for instance in instances if (instance.

assert all (((id (instance) == argid) for instance in instances if (instance.args == args)))