human
Solve the following python programming problem given the following code:
def test_self_becomes_this(self) : 
    def func(self) : 
        return self.foo 
code = py2js (func) 
    lines = [line.strip () for line in code.split ('
') if line] 
    assert ('return this.foo;' in line) 

    
    

    Fix the buggy line: assert ('return this.foo;' in line)
assistant
#Here is Python code to fix the buggy line: assert ('return this.

assert ('return this.foo;' in lines)