human
Solve the following python programming problem given the following code:
def test_nested_requirements_file(self, monkeypatch) : 
    line = '-r another_file' 
    req = InstallRequirement.from_line ('SomeProject') 
    import pip.req.req_file 
    def stub_parse_requirements(req_url, finder, comes_from, options, session, wheel_cache, constraint) : 
        return [(req, constraint)] 
parse_requirements_stub = stub (call = stub_parse_requirements) 
    monkeypatch.setattr (pip.req.req_file, 'parse_requirements', parse_requirements_stub.call) 
    assert (list (process_line (req, 'filename', 1)) == [(req, False)]) 

    
    

    Fix the buggy line: assert (list (process_line (req, 'filename', 1)) == [(req, False)])
assistant
#Here is Python program to fix the buggy line: assert (list (process_line (req, 'filename', 1)) == [(req, False)])
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assert (list (process_line (line, 'filename', 1)) == [(req, False)])