human
Solve the following python programming problem given the following code:
def test_check_exists() : 
    try : 
        directory = tempfile.mkdtemp () 
        with open (os.path.join (directory, 'abcdef.txt'), 'w') as f : 
            print ('
', file = f) 
@ check_exists (required_files = ['abcdef.txt']) 
        def foo(directory, a = None, b = None) : 
            pass 
try : 
            foo (directory) 
except MissingInputFiles : 
            assert False, 'MissingInputFiles raised when files present' 
@ check_exists (required_files = ['ghijkl.txt']) 
        def bar(directory, c = None, d = None) : 
            pass 
assert_raises (MissingInputFiles, bar, directory) 
        @ check_exists (required_files = ['abcdef.txt', 'ghijkl.txt']) 
        def baz(directory, x, y = None) : 
            pass 
assert_raises (MissingInputFiles, baz, directory, 9) 
        try : 
            baz (directory, 9) 
except MissingInputFiles as e : 
            assert (bar.filenames == ['ghijkl.txt']) 
with open (os.path.join (directory, 'ghijkl.txt'), 'w') as f : 
            print ('

', file = f) 
try : 
            bar (directory) 
            baz (directory, 44) 
except MissingInputFiles : 
            assert False, 'MissingInputFiles raised when files present' 
finally : 
        os.remove (os.path.join (directory, 'abcdef.txt')) 
        os.remove (os.path.join (directory, 'ghijkl.txt')) 
        os.rmdir (directory) 

    
    

    Fix the buggy line: assert (bar.filenames == ['ghijkl.txt'])
assistant
#Here is Python code to fix the buggy line: assert (bar.

assert (e.filenames == ['ghijkl.txt'])