human
Solve the following python programming problem given the following code:
def test_docstring(self) : 
    def func(a, b) : 
        ' docstring ' 
        return (a + b) 
code = py2js (func) 
    assert (evaljs ((code + 'func(100, 10)')) == '110') 
    assert (evaljs ((func + 'func("x", 10)')) == 'x10') 
    assert (code.count ('// docstring') == 1) 

    
    

    Fix the buggy line: assert (evaljs ((func + 'func("x", 10)')) == 'x10')
assistant
#Here is Python program to fix the buggy line: assert (evaljs ((func + 'func("x", 10)')) == 'x10')
.

assert (evaljs ((code + 'func("x", 10)')) == 'x10')